Below you will see a chart of English language word roots that
are common prefixes and suffixes to base words. (This list is similar
to that which appeared previously on this site.)
This list is a small portion of our 2,000 word root database which you can
search using our root search engine.
Transcript
Hey, there! Welcome to this video on root words, prefixes, and suffixes.
Many of the words we speak in English are made up of Latin and Greek words, but we have added prefixes and suffixes to them. Prefixes and suffixes are known as affixes.
The original word, before you add the affixes, is known as a root word. A root word can stand on its own as a complete word. For example the word reform. Re- is the prefix, and form is the root word. Form, by itself, is still a word. A root, on the other hand, does not typically make up a complete word on its own. For example, transmit. The trans is the prefix meaning across, and mit is the root meaning “to send.” Mit, by itself, is not a complete word.
Now, let’s take a look at what prefixes and suffixes actually are.
Words can be long and difficult at times, but understanding root words and the affixes can help you to understand the meaning of those long words and make them less scary.
New words can be made by adding a prefix before or a suffix after a root or root word.
When an affix is added before the root or root word, it is called a prefix. A helpful way to remember this is by looking at the word prefix itself. Pre means “before,” and a prefix comes before the root or root word.
A prefix often changes the meaning of a word. For instance, the word usual just means that something is customary or habitual. However, when you add the prefix un-, meaning “not” or “opposite of,” to the beginning, it changes the meaning of the word. Now, we have the word unusual, which means that something is not usual, not common, or is rare. Prefixes have definitions of their own, so when we add them onto a root word or root, we have to understand that the meaning of the word has been modified.
Now, an affix that is added to the end of a root or root word is called a suffix. Unlike a prefix, a suffix typically does not change the meaning of the word, at least not in a major way. Instead, a suffix typically adds more specification. For instance, if I say that someone is tall, you think of a person who is above the average or normal height. However, when I say someone is taller, I’m letting you know that a person is tall in comparison to another person, but they may not be tall in general.
Take a look:
Mark is tall.
Mark is taller than Jeff.
The meaning of the word is still referring to the height of a person or an object, but adding the suffix has changed the specification.
A suffix can add plurality, which just means that there are more than one of something. The most popular suffixes are -s and -es. These are examples of suffixes that add plurality. I actually just did this with the word suffix. When I just say “suffix,” I am letting you know that there is only one, but when I say “suffixes,” I’ve added plurality, letting you know that there is more than one.
Words can have a prefix, root or root word, and suffix all in one.
Let’s look at the word destruction
De- is the prefix meaning “opposite.” Struct is the Latin root meaning “to build,” and -ion is the suffix meaning “act or process.” Understanding the meaning of prefixes, roots or root words, and suffixes helps us to understand the proper meaning of a word. With our definition of the prefix, root, and suffix, in the word destruction, we can see that the opposite of building is happening.
There are thousands of roots and root words out there that are used in the English language. There are fewer prefixes and suffixes combined than there are roots and root words. Practice finding the prefixes, roots and root words, and suffixes in the words you use in class and at home.
The more you practice, the easier it will be for you to understand the meaning of words that you have never even heard of.
I hope this video on prefixes, roots and root words, and suffixes was helpful for you!
See you next time!
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The English language is filled with words borrowed from ancient Greek and Latin, which makes supplementing your instruction with word parts practice that much more critical. There are countless ways to incorporate word parts into your lesson plans. You may already have a structured plan in place, or you might be testing the waters. Either way, teach your students to be word detectives. A word detective looks at all the clues to determine a word’s meaning. When students know how to decode large words by identifying root words and affixes, they will be sufficiently prepared to tackle higher level texts.
The table below lists 120 commonly used Greek and Latin root words, prefixes, and suffixes. It also includes the meaning of each word part and several example words. It’s a great place to start if you’re interested in adding a regularly scheduled word parts practice to your daily teaching agenda.
Word Part | Meaning | Example Words |
ab | away | absent, abnormal, absorb |
ab | away | absent, abnormal, absorb |
able/ible | capable of | reversible, breakable, visible |
ad | to; toward | adhere, adjoin, adapt |
al | having to do with | herbal, factual, seasonal |
amb/ambi | around; both | ambient, ambiguous, amble |
ante | before | anterior, antebellum, antecedent |
anthrop | human | anthropology, misanthrope, philanthropist |
anti | against | antibiotic, antisocial, antifreeze |
aqu | water | aquarium, aqueduct, aquifer |
ast | star | astronomy, astrology, asteroid |
aud | hear | audio, audience, auditorium |
auto | self | autograph, automobile, autobiography |
ben/bene | good | benefit, benign, benevolent |
bi | two | bicycle, bilingual, bisect |
bio | life | biology, biography, biopsy |
cent | hundred | century, percent, centipede |
chrono | time | chronic, chronological, chronicle |
circum | around | circumvent, circumscribe, circumference |
co/con | with; together | construct, collaborate, confer |
counter | opposing | counterbalance, counterfiet, counteract |
cred | believe | incredible, discredit, credence |
cycl | circle | recycle, bicycle, cyclone |
dec | ten | decade, decimal, decibel |
dem/demo | people | democracy, demographics, epidemic |
di/du | two | duet, dissect, dialogue |
dia | across; through | dialogue, diameter, diagnosis |
dic/dict | speak; say | dictionary, dictate, contradict |
dis | not | disagree, disinfect, disobey |
ence/ance | state; condition | performance, conference, insurance |
equ | equal | equator, equality, equation |
ex | former; past | ex-girlfriend, ex-president, ex-mayor |
fer | carry | transfer, conifer, aquifer |
frac/frag | break | fraction, fragment, fragile |
ful | full of | thoughtful, painful, helpful |
gen | born | gene, gender, genesis |
geo | earth | geology, geode, geography |
grad | step | graduation, graduate, gradual |
graph | write | paragraph, calligraphy, autograph |
hydro/hydra | water | hydrate, hydrogen, hydroplane |
hyper | over; beyond | hyperactive, hyperlink, hyperventilate |
ian | related to; like | librarian, pedestrian, historian |
ic/tic | having to do with | realistic, organic, metallic |
ile | related to | reptile, sterile, juvenile |
in | not | incapable, incomplete, inaudible |
inter | between | internet, intermission, international |
intra | within | intrastate, intramural, intrapersonal |
ism | condition; belief in | racism, tourism, journalism |
ist | person who does | soloist, artist, cyclist |
ity | state of being | creativity, disability, equality |
ject | throw | eject, reject, interject |
junct | join | juncture, junction, adjunct |
less | without | homeless, useless, wireless |
log | word | monologue, prologue, eulogy |
ly | how; how often | quickly, hourly, carefully |
magn | large; great | magnify, magnitude, magnificent |
mal | bad; evil | malady, malaria, malice |
man | hand | manicure, manage, manual |
medi | middle | mediocre, medium, medieval |
mega | large | megabyte, megaphone, megalith |
meter | measure | diameter, perimeter, thermometer |
micro | small | microscope, microwave, microbe |
min | small | miniature, minute, minimum |
mis | wrong | misbehave, misspell, miscount |
miss/mit | send | missile, transmit, dismiss |
mon/mono | one | monument, monologue, monorail |
mort | death | immortal, mortify, mortuary |
multi | many | multicolored, multicolored, multigrain |
non | not | nonviolent, nonstop, nonfiction |
oct/octo | eight | octopus, octagon, octave |
ology | study of | biology, zoology, psychology |
ortho | straight | orthodontist, orthopedic, orthodox |
ous | having | virtuous, adventurous, hazardous |
pan | all | panorama, pandemic, pantheon |
para | beside; related | parallel, parasite, paramedic |
path | disease; feeling | pathogen, psychopath, sympathy |
ped | foot | pedal, pedestrian, pedometer |
phobia | fear | claustrophobia, hydrophobia, arachnophobia |
phon | sound | telephone, saxophone, microphone |
photo | light | photon, photography, photosynthesis |
phys | body; nature | physician, physical, physique |
plex | parts; units | complex, cineplex, duplex |
poly | many | polygon, polytheism, polygraph |
port | carry | airport, transport, import |
pos | put; place | position, compose, deposit |
post | after | posterior, postscript, postpone |
pre | before | pregame, preview, prepay |
psych | mind | psychology, psychic, psychiatrist |
quad | four | quadruple, quadrant, quadratic |
re | again | rebuild, refund, renew |
retro | back; backwards | retrospect, retroactive, retrograde |
rupt | break | disrupt, interrupt, erupt |
scope | look; see | periscope, telescope, microscope |
script/scrib | write | scribble, prescribe, manuscript |
sect | cut | section, dissect, intersect |
semi | half | semicircle, semifinal, semicolon |
sens/sent | to feel | sentimental, sensitive, consent |
soci | people | sociology, social, associate |
sol | alone | solo, solitary, desolate |
spec | see | inspect, spectacle, spectator |
spir | breathe | conspire, inspire, respiratory |
struct | build | construction, structure, instruct |
sub | under | subway, submarine, subtitle |
super | over; greater | superior, supervisor, superimpose |
syn/sym | with; together | sympathy, synonym, symptom |
tech | craft; skill | technique, technology, technician |
tele | far | television, telephone, telescope |
terr/terra | land; earth | terrain, terrace, territory |
the/theo | god | theology, monotheism, polytheism |
therm | heat | thermometer, thermos, hypothermia |
tion | action; state of being | infection, addition, celebration |
tract | drag; pull | attract, subtract, contraction |
trans | across; through | transform, transaction, translate |
tri | three | tripod, tricycle, triple |
un | not | unhappy, unhealthy, unsafe |
uni | one | unicycle, uniform, united |
vac | empty | vacuum, vacant, evacuate |
ven | come | prevent, venue, invent |
vert/vers | turn | conversation, introvert, reverse |
vid/vis | see | visible, video, television |
zoo | animal | zoology, zookeeper, zoo |
FREE! 120 Commonly Used Roots, Prefixes, and Suffixes
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Prefix + Root Word + Suffix
a verb into a noun | |
a noun into a verb | |
an adjective into a noun |
a verb into a noun | |
a noun into a verb | |
a noun into an adjective |
a verb into a noun | |
a noun into a verb | |
an adjective into a noun |
a verb into a noun | |
a noun into a verb | |
a verb into an adjective |
a verb into a noun | |
a noun into a verb | |
and adjective into a noun |
a verb into a noun | |
a noun into a verb | |
a noun into another noun |
a verb into a noun | |
a noun into a verb | |
a noun into another noun |
a verb into a noun | |
a noun into a verb | |
a noun into an adjective |
a verb into a noun | |
a noun into a verb | |
a verb into an adjective |
a verb into a noun | |
a noun into a verb | |
an adjective into an adverb |
a verb into a noun | |
a noun into a verb | |
a verb into an adjective |
a verb into a noun | |
a noun into a verb | |
a noun into another noun |
a verb into a noun | |
a noun into a verb | |
a noun into an adjective |
a verb into a noun | |
a noun into a verb | |
a noun into an adjective |
a verb into a noun | |
a noun into a verb | |
an adjective into an adverb |
Please enter the word that you see below.
The System of Affixation in English refers to the process of attaching a group of letters to a word in order to change its meaning, number, state, or form.
There are two primary types of affixation: Prefixes and Suffixes
Base word | Affixation | Word |
---|---|---|
determined | pre + determined | predetermined |
play | play + er | player |
weekly | bi + weekly | biweekly |
follow | follow + ing | following |
Prefix
A prefix is a small group of letters that are affixed at the beginning of the word.
- Subsidiary
- Nonviolence
- Intolerance
Functions of Prefix
Indicate presence or absence
amoral | without morals |
injected | put into |
congenital | present from birth |
Indicate position
hypodermic | under the skin |
circumnavigate | to sail around |
antechamber | a chamber before another |
Interstellar | between stars |
Indicate qualities, size, or number
thermometer | heat measuring instrument |
macrocosm | big world or universe |
polyglot | someone who speaks many languages |
Indicates time, frequency, or order
post dated | later than the stipulated date |
redo | do again |
primary | first |
Types of Prefixes
Negative Prefixes
Prefix | Meaning | Usage |
---|---|---|
un- | not | uncomfortable, unbearable, unforgivable |
in- | not | incomplete, indecisive, independent |
dis- | opposite of | disinterested, disproportionate, displeasure |
ir- | not | irresponsive, irresponsible, irrevocable |
il- | not | illogical, illegitimate, illegible |
im- | not | improbable, impossible, impenetrable |
non- | not | nonviolent, nonchalant, non-invasive |
mis- | wrong/wrongly | misinterpret, misunderstand, miscalculation |
mis- | hate | misogynist, misogamist, misanthrope |
mal- | bad/ badly | malfunction, malevolent, malediction, malnutrition |
anti- | against | antinational, antibacterial, antibiotics |
de- | down, reduce | descend, decry, deject, demote, decline |
a- | without, not | asocial, amorphous, abiotic, atrophy |
dis- | apart, off, away | disband, disturb, disburse, dismiss |
dys- | bad | dystopia, dysfunctional, dyslexia |
Prefixes of Size
Prefix | Meaning | Usage |
---|---|---|
semi- | half | semicircle, semiconductor, semi-active, semicolon |
equi- | equal | equidistant, equivalent, equisonant |
micro- | small, tiny | microscope, microorganism, microcosm, micromanage |
macro- | big | macroeconomics, macrocosm, macrolevel |
mega- | big | megalomaniac, megapolis, megapixel |
mini- | small | minimum, minicomputer, miniature |
maxi- | big | maximum, maximal, maxim |
hemi- | half | hemisphere |
Prefixes of Position or Location
Prefix | Meaning | Usage |
---|---|---|
inter- | between | interstellar, intermediate, interval, intervene |
super- | over, above | superfluous, supersede, superintendent, supervisor |
trans- | across | transfer, transport, transgress, transmit |
ex- | out | exterior, external, extraneous, extract |
in-/ im- | inside | internal, induce, imbibe, impregnate, influence |
sub-, suc-, sus- | under | subterranean, susceptible, submit, submarine |
sur- | over | surface, surfeit, surrender, survive, surcharge |
circum- | around | circumspect, circumnavigate, circumscribe, circumvent |
peri- | around | perimeter, periscope, perimortem |
per- | through | percolate, pervade, perfect, perforated, perceive |
infra- | below | infrared, infravision, infrarealism |
ab- | away | abduct, abstain, abjure, abdicate |
contra- | against | contravene, contradict, contralto, contrast |
de- | down | descend, decline, demote, decrease |
dia- | across | diagonal, diaphanous, diachronic, diagnosis |
hyper- | over | hypertrophy, hyperactivity, hyperbole, hypertension |
hypo- | under | hypothermia, hypothyroid |
ob- | against | obloquy, obnoxious, object, obfuscate |
pro- | for | prologue, provide, protect, project, procreate |
syn-, sym- | together | synthesis, syndicate, sympathy |
ultra- | beyond | ultraviolet, ultramodern, ultra-royalist, ultrasonic |
under- | under | underground, underachiever, underestimate |
meta- | beyond | metastasis, metabolize, metamorphic, metaphysics |
mid- | between | midterm, middle, midday |
by- | near | bypass, bygone, by-product |
epi- | upon | epidermis, epilogue, epitaph |
post- | back | postern, posterior |
Prefixes of time and sequence
Prefix | Meaning | Usage |
---|---|---|
pre- | before | prevent, prepare, predict, premonition, prelude |
ante- | before | antediluvian, antebellum |
prime- | first | primary, primordial, prima donna, primate, primeval |
post- | after | posterity, posthumous, postlude, post-marital |
retro- | before | retrogression, retroflex, retrospect |
pro- | before | progenitor, proceed, prologue, prophecy, prophylactic |
re- | again | recur, recount, rethink |
fore- | before | foretell, forestall, foresight |
after- | after | after-effects, afterthought |
chron- | time | chronology, chronicle |
Prefixes of numbers and amount
Prefix | Meaning | Usage |
---|---|---|
mono- | one | monotheism, monologue, monochromatic, monarch |
uni- | one | universe, unitary, union, unanimous, unity |
bi- | two | bicentennial, biannual, bicycle, bigamous, bipolar |
du-, di- | two | duo, dual, dicotyledon, dichromatic |
tri- | three | trident, tricolor, triumvirate, trifecta, trilogy, tripod |
quad- | four | quadruple, quadruplets, quadrilateral |
tetra- | four | tetrapods, tetrameter |
penta- | five | pentagram, pentacle, pentagon |
quint- | five | quintuplets, quintal |
hex- | six | hexagon, hexadecimal, hexameter |
sex- | six | sextuplets, sextet |
sept- | seven | septuagenarian, septuplets |
hept- | seven | heptagonal, heptathlon |
octa- | eight | octagon, October, octopus, octuplets |
nov- | nine | novena, November |
dec- | ten | decade, decimal, decathlon |
hendeca- | eleven | hendecacolic, hendecagonal |
dodeca- | twelve | dodecahedron, dodecaphony |
triskaideka- | thirteen | triskaidekaphobia |
cent- | hundred | century, century, centipede |
hector- | thousand | hector, hectogram |
kilo- | thousand | kilogram |
mega- | million | megaton, megahertz |
giga- | billion | gigabyte |
multi- | many | multimillionaire, multipurpose |
poly- | many | polynomial, polygon, polymath |
Miscellaneous Prefixes
Prefix | Meaning | Usage |
---|---|---|
alb- | white | albino, albinism |
ambi- | both | ambidextrous, ambivalent, ambiguous |
amphi- | both | amphibian, amphitheatre |
bio- | life | biology, biohazard, biosphere |
auto- | self | automated, autonomous, autocrat |
co-, com-, con- | together, joint | co-dependent, companion, congregation |
en-, em- | make, become | engender, empower, endanger |
eu- | good | euthanasia, eulogy, euphemism |
cario- | heart | cardiovascular, cardiogram |
hydr- | water | hydrogen, hydraulic, hydrophobia |
ig- | bad | ignominy, ignoble, ignorant |
bene- | good | benevolent, benediction, benign |
bon- | good | bon voyage, bonhomie, bonafide |
homo- | same | homonym, homophone, homeopathy |
pan- | all | panacea, pan Asiatic, panorama |
pseudo- | fake | pseudonym |
neo-, nov- | new | neologism, novelty |
amo-, ami | love | amorous, amicable, amiable |
aqua- | water | aqueduct, aquatic |
Suffix
A suffix is a group of letters that are fixed to the end of a root word or a base word.
Functions of Suffix
Change the part of speech of the word
meaning (n) | meaningful (adj) |
beautiful (adj) | beautifully (adv) |
subject (n) | subjecting (v) |
Indicate whether the number is singular or plural
girl (singular noun) | girls (plural noun) |
stratum (singular noun ) | strata (plural noun) |
lifts (singular verb) | lift (plural verb) |
Indicate the tense of the verb
hopped (past) | hopping (continuous) |
steal (past) | stolen (past participle) |
Indicate the gender of a noun
host (masculine) | hostess (feminine) |
steward (masculine) | stewardess (feminine) |
executor (masculine) | executrix (feminine) |
Types of Suffixes
Noun Suffixes
Suffix | Usage | Example |
---|---|---|
-al | state | refusal, betrayal, perusal |
-ance, -ence, -ancy, -ency | quality or state | militancy, performance |
-tion | condition | condition, relation |
-ice | condition | malice, novice, justice |
-er/-or | doer | painter, trainer, actor |
-graph | record | telegraph, phonograph, polygraph |
-ism | belief | Hinduism, communism, fascism |
-ist | doer | pacifist, pianist, altruist |
-ian | someone who does | Gandhian, guardian, politician |
-ing | name of an activity | reading, gardening, sleeping |
-ity | state | continuity, annuity |
-logy | the study | geology, neurology |
-ship | state of | friendship, kinship, sportsmanship |
-sion, -tion | the process of | expansion, determination, connection |
-ory | place | dormitory, reformatory, laboratory |
-orium, -arium | place | sanitarium, aquarium, crematorium |
-mania | madness | monomania, bibliomania, egomani |
-phobia | fear | hydrophobia, cynophobia, mysophobia |
-ure | state | composure, exposure, leisure |
-ment | state | abandonment, refinement, entertainment |
-ness | state | happiness, completeness, fullness |
Suffixes of Verbs
Suffix | Usage | Example |
---|---|---|
-able | to make | enable, disable |
-ate | Latin origin verbs | recreate, abate, mediate |
-ed | simple past or participle form | killed, toyed, booked |
-en | verbs formed from adjectives | broken, frozen, sunken |
-er | actions that have a repetitive quality | blabber, snicker, mutter |
-fy | do | magnify, specify, rectify |
-ing | action in continuation | hearing, yearning, making |
-ise | to make/do | revolutionise, apologise, despise |
-ish | become or do | flourish, banish, demolish |
-nt | to do | prevent, augment, content |
-s, -es | simple present tense form | criticises, runs, laughs |
Suffixes of Adjectives
Suffix | Meaning | Usage |
---|---|---|
-able, -ible | having the quality of | flexible, available, eatable |
-al | related to | ventral, global, musical |
-ant | doing | dependent, buoyant, resilient |
-ic | having the quality | terrific, generic, specific |
-esque | like, having the quality | statuesque, picturesque |
-er, -est | comparative and superlative qualities | fatter, tallest |
-ose | full of | verbose, grandiose |
-ful | full of | beautiful, boastful, grateful |
-ing | participle form of an adjective | interesting, frustrating, sleeping |
-istic | having the quality | realistic, artistic, surrealistic |
-ive | having the nature of | pensive, aggressive, massive |
-ous, -ious | full of | gaseous, spacious, gracious |
Suffixes of Adverbs
Suffix | Meaning | Usage |
---|---|---|
-ably | with a quality | comfortably, admirably, disagreeably |
-ibly | with a quality | audibly, horribly, negligibly |
-s | shows time or place | backwards, always, forwards |
-wise | shows manner or position | clockwise, otherwise, lengthwise |
Root Words and Base Words
The root word and the base words are the parts that contain the primary meaning of the word. Prefixes and suffixes are added to root and base words to create new words and ideas.
Root Word
- A root word cannot stand on its own as an independent word.
- It needs the addition of the prefix or the suffix for the completion of its meaning.
- For example, let us consider the words amphibian, regeneration and subtraction.
amphi- -bi- -an
prefix root suffix
re- -generat- -ion
prefix root suffix
sub- -tract- -ion
prefix root suffix
- In the above cases, the roots -bi-, -generat- and -tract- cannot stand alone as individual words.
- They are therefore known as root words.
Base Word
- A base word, unlike a root word, can stand on its own like an independent word.
- It does not need the addition of a prefix or suffix in order to function as a stand-alone word.
- For example, let us consider the words redone, nonviolent and unmoved.
re- done
prefix base word
non- violent
prefix base word
un- moved
prefix base word
In the above examples, done, violent, and moved can function as independent words.
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Also, Read
Figures of Speech
Subject Verb Agreement
Degrees of Comparison
Time and Tense
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In this study guide, you will learn about common prefixes and suffixes in English. You will discover how these change the meaning and form of a word. Examples are given to show you exactly how to use these prefixes and suffixes. Check out the exercises at the end to test your understanding! You can also download this guide as a free pdf to use offline. Let’s dive in!
What you will learn:
- Prefixes – meanings & use
- Suffixes – common suffixes for nouns & adjectives
- Spelling rules & word families
- List of common prefixes & suffixes (with examples)
- Prefixes & suffixes: exercises
Prefixes and suffixes are collectively known as ‘affixes’. Some words have both a prefix and a suffix, for example:
prefix + root word + suffix
un-comfort-able
Understanding how words are formed using prefixes and suffixes can help you work out the meaning of words and make sense of difficult spellings.
The most commonly-used prefixes are those that change an adjective with a positive meaning into one with a negative or opposing meaning, for example: uncomfortable. Prefixes that change the word to a negative meaning include: in-, ir-, im- and dis-. Examples formed using this type of prefix are: inactive, irregular, impossible and dishonest.
Prefix | Meaning | Example |
anti- | opposed/to prevent | antidote |
counter- | opposite/ opposed to | counterproductive |
de- | something is removed or reduced | de-activate |
dis- | negative/opposite | disadvantage |
ex- | former | ex-wife |
extra- | outside/beyond | extra-curricular |
fore- | before | forewarn |
homo- | same | homosexual |
hyper- | very/extremely | hyper-sensitive |
il- | negative/opposite | illogical |
im- | negative/opposite | immature |
in- | negative/opposite | inexpensive |
inter- | between | international |
ir- | negative/opposite | irregular |
mal- | bad/wrong | malpractice |
mid- | middle | midwinter |
mis- | bad/wrong | misplace |
mono- | one | monorail |
neo- | new | neoclassical |
non- | not | nondescript |
omni- | all | omnivore |
out- | outside/beyond/bigger | outweigh |
pre- | before | pre-date |
re- | again | re-arrange |
semi- | half | semicircle |
sub- | under | submerge |
super- | bigger/more powerful | superhero |
un- | negative/opposite | unbelievable |
under- | beneath/not enough | underplay |
Some groups of prefixes have very specific meanings and uses. The table below summarises the most common prefixes for metric measures, those that describe multiples of units and those indicating fractions of units.
Prefix | Meaning | Example |
deca- | ten times a unit | decathlon |
kilo- | one thousand times a unit | kilometre |
mega- | one million times a unit | megabyte |
giga- | one billion units | gigawatt |
deci- | one tenth of a unit | decilitre |
centi- | one hundredth of a unit | centimetre |
milli- | one thousandth of a unit | millimetre |
micro- | one millionth of a unit (also means extremely small) | micro-organism |
Suffixes: common suffixes for nouns & adjectives
Suffixes enable root words to change in different ways in order to form different classes of word. For example, the root word ‘create’ can be modified to creation (noun), creative (adjective) and creatively (adverb). Different classes of words (nouns, verbs, adjectives) have their own common suffixes.
Common suffixes for adjectives | Example | Common noun suffixes | Example | |
-able / -ible | adorable
terrible |
-ance / -ence | endurance
conscience |
|
-ant / -ent | pleasant
confident |
-ant | contestant | |
-ate | passionate | -dom | freedom | |
-ful | wonderful | -ee | employee | |
-ian | Canadian | -er / -or | painter
conductor |
|
-ic | energetic | -ery | scenery | |
-ical | methodical | -hood | neighbourhood | |
-ish | selfish | -ion | election | |
-ive | positive | -ism | socialism | |
-less | pointless | -ist | novelist | |
-like | business-like | -ity | regularity | |
-ous | adventurous | -ment | improvement | |
-some | wearisome | -ness | sadness | |
-y | noisy | -ship | friendship | |
-ure | closure |
Adverb suffixes | Examples | Verb suffixes | Examples | |
-ly | quickly | -en | eaten | |
-wise | clockwise | -ise | energise | |
-ward | northward | -ate | alternate |
Spelling rules & word families
1. Suffix spelling rules
The following rules apply to British English spelling. See also the section below on American spelling rules.
For most short words ending in a single consonant, double the consonant when adding a suffix, e.g. big/bigger. For longer words ending in ‘-l’ you should also double the consonant, e.g. travel becomes traveller. Many verbs also follow this rule, for example modelling.
For words ending in ‘-e’, the final ‘e’ is often dropped when a suffix beginning with a vowel is added. Examples include: evolve/evolving and irritate/irritable. The ‘e’ is sometimes kept to help with pronunciation, for example, in the word knowledgeable.
This same spelling pattern occurs in manageable and changeable. Some words have two alternative spellings. For example loveable and lovable are both correct spellings. Words ending in ee, oe and ye do not drop the ‘e’ when a suffix is added. Examples include seeing and canoeing.
2. American spelling
There are some differences in spelling between British and American English. Here are some common differences:
American English | British English |
analyze | analyse |
traveled/traveling | travelled/travelling |
defense | defence |
civilization | civilisation |
center | centre |
humor | humour |
dialog | dialogue |
3. Word families
“Word families” are groups of words where different suffixes have been added to the same root word. It would be very difficult to learn all the word families in English, but knowing a few common word families can help you to learn spelling patterns and common prefix and suffix meanings.
English examinations often require students to ‘transform’ words by adding the appropriate prefixes and suffixes. So, familiarising yourself with prefixes and suffixes could help with your exam skills as well as your vocabulary.
The following word families demonstrate how root words can be transformed to create different forms with similar meanings.
Verb | Noun | Adjective | Adverb |
succeed | success | successful | successfully |
specialise | specialism | special | especially |
attract | attraction | attractive | attractively |
surprise | surprise | surprising | surprisingly |
4. Hyphen or no hyphen?
In most cases where a prefix is added to a word, no hyphen (-) is used. However, hyphens can be used in some situations to make the meaning of the word clearer and to avoid confusion.
One example is where the prefix ends with the same letter that the word starts with. For example co– and owner. Adding co- without a hyphen could change the pronunciation of the word and make the meaning difficult to understand. For this reason co-owner is clearer than coowner.
Confusion can also occur where the word has two meanings. For example, a remark is a spoken comment, but re-mark means to mark/assess an exam again. Using a hyphen in this situation can avoid confusion.
A hyphen is often used with a prefix before a proper noun. Examples include: un-American and anti-British. Finally, the prefixes ex-, self- and co- are often used with a hyphen.
Prefixes & suffixes – examples
The list below summarises commonly used prefixes and suffixes in English. Example sentences are also provided to help you understand them in context.
Prefixes examples
Anti-
antiseptic, anti-climax, antifreeze, antibiotic, antibody, anticlockwise
The atheletes ran around the track in an anticlockwise direction.
Many infections can be treated with antibiotics.
Counter-
counterpart, counterproductive, counterclaim
Putting too much pressure on young people can be counterproductive.
De-
deteriorate, derail, deactivate
The discussion deteriorated into an argument.
Dis-
dissatisfied, disappointed, disloyal, disobedient, disruptive, distrust
Jane never did what she was told. She was a disobedient child.
Rob was disappointed when he didn’t get the job.
Ex-
ex-wife, ex-teacher, ex-husband, ex-policeman
I still meet my ex-husband sometimes.
No, he wasn’t a teacher before. He’s an ex-policeman.
Extra-
extracurricular, extracellular, extraordinary
Her journey across the world was extraordinary.
Fore-
forewarn, foreground, forefathers, forecast, forego, forefront
This robotics company is at the forefront of modern technology.
The weather forecast for tomorrow is good.
Homo-
homogeneous, homophone, homosexual
Air is a homogeneous mixture.
Hyper-
hypersensitive, hyperlink, hyper-intelligent
A hyperlink connects one page to another.
Il-
illogical, illegal, illiterate, illuminate
Driving under the age of 17 is illegal in the UK.
Im-
immature, immaterial, immediately, immense, impersonal, impatient
You need to speak to the headteacher immediately.
Jamie looks sensible but he is actually quite immature.
In-
inevitable, incorrect, indifferent, indoors, ineffective, insincere
The examiner told me that some of my answers were incorrect.
Unfortunately, the cancer medicine was ineffective.
Inter-
international, intermediate, interpreter, interval, interfere, interest
My husband is working for an international company.
Maggie decided not to be a teacher; she is training to be an interpreter.
Ir-
irresponsible, irrational, irregular, irrelevant
Irregular verbs are difficult to learn!
Mal-
malpractice, malfunction, malnourished, malnutrition
I couldn’t complete the work because laser cutting machine malfunctioned.
Mid-
mid-July, midweek, mid-September, mid-sentence
I’m going to go out for a walk midweek.
Mis-
misunderstanding, mistrust, misuse, misspell, misrepresent, mispronounce
We didn’t fall out – it was just a misunderstanding.
The newspaper report misrepresented what I said!
Mono-
monorail, monotone, monochrome, monotonous, monosyllable, monopoly
That song has a boring tune; it’s monotonous.
A monorail has just one rail.
Neo-
neonatal, neoclassical, Neolithic
Yes, that museum is a neoclassical building.
Non- (note the prefix ‘non’ is usually used with a hyphen)
non-event, non-stop, non-smoking, non-alcoholic, non-member, non-resident
Sorry, this is a non-smoking building.
Non-residents are welcome in the restaurant.
Omni-
omnivore, omnipresent
An omnivore eats plants and animals.
Out-
outbreak, outgrow, outrun, outweigh, outbuilding, outspoken
He has outgrown all his baby clothes now.
Overall, the advantages outweigh the disadvantages.
Pre-
pre-war, pre-recorded, pre-pay, pre-set, pre-tax
She has a pre-recorded message on her phone.
You can pre-pay for your dental treatment.
Re-
replay, rerun, re-record, re-write
She had to re-write her essay to get a higher grade.
The football match last weekend was a replay.
Semi-
semicircle, semi-darkness, semi-detached, semi-literate, semi-professional
They left the restaurant in semi-darkness.
Mary is a great tennis player. She is semi-professional.
Sub-
subtropical, subsection, sub-zero, subnormal, subsoil
They had to cope with sub-zero temperatures.
Much of North Africa has a sub-tropical climate.
Super-
supermarket, supernatural, super-tanker, super-rich, supervisor
Supermarkets have a greater range of products than local shops.
John has been my supervisor for the past year.
Un-
unbelievable, unkind, unusual, unable, uncomfortable, uncanny
My new shoes are uncomfortable.
That film was unbelievable!
Under-
underplay, underwear, under-valued, under-rated, under-paid
He was an under-rated actor.
I’m not selling that vase. I think it has been under-valued.
Suffixes examples
-able
unbelievable, comfortable, washable, likeable, knowledgeable, fashionable (adjectives)
Do you prefer fashionable or comfortable clothes?
Professor Smith is very knowledgeable about insects.
-ance
performance, allowance, disturbance, appearance, brilliance (nouns)
Tom is given a weekly allowance by his parents.
The police were called to a disturbance in the street.
-ant
pleasant, brilliant, disinfectant, servant, assistant, (nouns and adjectives)
We had a brilliant holiday in Spain.
He decided to employ an assistant.
-ate
activate, affectionate, regulate, electorate, mediate, fortunate (nouns and adjectives)
You can activate your PayPal account now.
His dog is well-behaved and affectionate.
-dom
freedom, kingdom, boredom (nouns)
Freedom of choice means you have more opportunity to make decisions.
-ence
presence, existence, occurrence, permanence (nouns)
I could feel a ghostly presence when I went into the room!
Most people dispute the existence of ghosts.
-ent
different, resident, president (nouns and adjectives)
She has been a resident in this area for many years.
-er
carpenter, painter, hotter, bigger, diner, photographer (nouns and adjectives)
He is training to be a painter.
She would love to be a photographer.
-ery
bravery, machinery, bakery, flattery (nouns)
You can buy bread at the bakery.
The fireman was praised for his bravery.
-ful
beautiful, wonderful, colourful, eventful, restful, careful (adjectives)
It was an eventful day.
I hope you have a wonderful holiday!
-hood
neighbourhood, childhood, priesthood (nouns)
This is a very quiet neighbourhood.
-ible
terrible, horrible, visible, edible (adjectives)
Is that plant edible?
Our house is visible from the road.
-ic
photographic, alcoholic, supersonic (adjectives)
SpaceX is planning to launch a supersonic plane.
The local pub serves alcoholic and non-alcoholic drinks.
-ical
historical, identical, satirical (adjectives)
John and Steve are identical twins.
-ion
decision, promotion, completion, election, exhaustion, deception (nouns)
The results of the election will be announced tomorrow.
She made an important decision today.
-ism
Cubism, socialism, criticism, heroism (nouns)
Cubism was one of the most influential art movements of the twentieth century.
-ish
childish, selfish, reddish, snobbish, Spanish, English (adjectives)
She looks grown-up but she is a little childish.
He has reddish hair.
-ist
socialist, novelist, guitarist, pianist, sexist, racist
She is a brilliant guitarist.
Sexism and racism are not to be tolerated in schools.
-ity
creativity, popularity, regularity, sexuality, eventuality, familiarity (nouns)
Her strength is her creativity.
Jenny carefully planned her trip to allow for any eventuality.
-ive
creative, positive, negative, transitive, explosive, detective (nouns and adjectives)
My brother-in-law is working as a private detective.
My mother is a creative person.
-less
careless, ruthless, pointless, meaningless, tasteless, powerless (adjectives)
It was a careless mistake.
Sorry, but this soup is tasteless.
-ment
permanent, government, employment, arrangement, management (nouns and adjectives)
She is really pleased that she now has a permanent job.
Have you got any management experience?
–ness
shyness, loudness, sadness, loneliness (nouns)
He had to try hard to overcome his shyness.
Loneliness can be a big problem for older people.
-ous
adventurous, pretentious, cautious, dangerous, spacious (adjectives)
Her new flat is very spacious.
She is really adventurous. She often travels to faraway places.
-ship
friendship, hardship, fellowship, premiership, citizenship (nouns)
He has kept his friendship with Tony going for 20 years.
They suffered a lot of hardship when they first arrived in the country.
-some
troublesome, bothersome, loathsome (adjectives)
Wasps can be troublesome in late summer.
-ure
closure, fracture, measure, exposure, failure (nouns)
He said the marriage broke down due to a failure to communicate openly.
She was disappointed about the closure of the business.
-y
funny, scary, wintry, feathery, scaly, messy
My room is always messy!
It was a beautiful wintry scene on Christmas Day.
Prefixes & suffixes: exercises
- What is the effect of adding a prefix to an adjective?
a. It makes the adjective negative.
b. It changes the ending of the adjective.
c. It changes the form of the word.
d. It changes the meaning of the adjective. - Which suffix is not an adjective suffix?
a. -able
b. -ion
c. -ive
d. -ful - What is the meaning or the prefix pre-?
a. before
b. not
c. under
d. after - Which word is spelled incorrectly?
a. knowledgeable
b. disatisfied
c. uncreative
d. immature - Which of the following adjectives does not have a negative meaning?
a. extraordinary
b. unhelpful
c. disappointed
d. unimaginative
Questions 6-10. Match the prefix with the word.
- Tom never waits for me. He is very ___patient.
a. un- b. im- c. il- - The table did not cost much. It was ___expensive.
a. in- b. non- c. un- - The President was ___elected.
a. re- b. non- c. un- - The workers are not really appreciated. A lot of them are ___paid.
a. over- b. non- c. under- - The court found that the company funds were ___used. The director was arrested.
a. non- b. mis- c. de- - Which sentence has a positive meaning?
a. She was unsuccessful in the interview.
b. She was over-joyed at the news.
c. The competition was an anti-climax.
d. She felt dissatisfied. - Which sentence includes an American spelling?
a. Travelling is one of my favourite pastimes.
b. It was a colourful painting.
c. The company introduced computerization in the 1990s.
d. I have to get a new driving license. - In which of the following words can a hyphen (-) be used?
a. de-activate b. dis-appointed c. un-popular d. in-complete - Which suffix correctly changes the adjective regular into a noun?
a. -ness b. -ity c. -ment d. ion - The prefix mis- cannot occur before which of the following verbs?
a. interpret
b. understand
c. survive
d. inform - Which one of the following words is incorrect?
a. anti-climax
b. antibiotics
c. antisuccessful
d. anticlockwise - Which word in this word family is an adverb?
a. success
b. successful
c. succeed
d. successfully - Which of the following measures indicates that it is one thousandth of a unit?
a. centimetre
b. kilometre
c. millimetre - Which one of the following verbs cannot be transformed into a noun using the suffix-ance?
a. tolerate
b. persevere
c. accept
d. notice - The prefix in- can be added to which one of the following adjectives?
a. costly
b. expensive
c. dear
d. pricy
Answers:
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Judith P.
— ESL Tutor.
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Syllable Rules >> Prefix Root Word Suffix
What is a prefix?
- One or more letters that are placed in front of a word to form a new word with a similar meaning.
- examples: redo, preview, unhappy, iPhone, & abnormal
- A prefix is usually not a word by itself.
Cite This Source
Syllable Rules >> Prefix Root Word Suffix
What is a root word?
- The base word which is combined with a suffix and/or prefix to form a a new word.
- The word which is left when all prefixes and suffixes are removed.
- examples: rechecked, preboarding, unchanged, untouched, & unanswered
Fun Fact
Spain, France, Greece, & Chad
4 countries, 1 syllable each
Syllable Rules >> Prefix Root Word Suffix
What is a suffix?
- One or more letters that are placed at the end of a word to form a new word with a similar meaning.
- examples: ended, dryer, dancer, talking, & sleeping
- A suffix is usually not a word by itself.
- Words can have more than one suffix.
- examples: cheerfulness, carefully, grudgingly, & annoyances