TypoGrammar

Vocabulary Building β€’ Word Formation

Understanding Prefixes & Suffixes

Unlock thousands of words by learning common prefixes and suffixes

50
Prefixes
41
Suffixes
9
Categories

Understanding prefixes and suffixes is like having a secret key to unlock the meaning of thousands of English words. A prefix is a group of letters added to the beginning of a word to change its meaning. A suffix is added to the end. By learning the most common ones, you can dramatically expand your vocabulary and improve your reading comprehension.

How Affixes Transform Words

Prefix Example:

un- + happy = unhappy (opposite meaning)

Suffix Example:

happy + -ness = happiness (adjective β†’ noun)

Common Prefixes

Negative & Opposite Prefixes

These prefixes reverse the meaning of the root word.

AffixMeaningExample
un-not, opposite ofhappy β†’ unhappy
dis-not, away fromagree β†’ disagree
in-, im-, il-, ir-not, withoutcorrect β†’ incorrect, possible β†’ impossible, legal β†’ illegal, regular β†’ irregular
mis-wrongly, badlyunderstand β†’ misunderstand
non-notsense β†’ nonsense
de-opposite, from, awayfrost β†’ defrost
anti-against, opposingsocial β†’ antisocial
counter-opposite, againstact β†’ counteract
mal-bad, wrongfunction β†’ malfunction
pseudo-false, fakescience β†’ pseudoscience

Time & Order Prefixes

These prefixes relate to when or in what order something happens.

AffixMeaningExample
pre-beforeview β†’ preview
post-afterwar β†’ postwar
re-again, backdo β†’ redo
fore-beforesee β†’ foresee
neo-new, modernclassical β†’ neoclassical
ex-former, out ofpresident β†’ ex-president
mid-middlenight β†’ midnight

Number & Quantity Prefixes

These prefixes specify a number or amount.

AffixMeaningExample
uni-, mono-onecycle β†’ unicycle, rail β†’ monorail
bi-, di-twocycle β†’ bicycle, oxide β†’ dioxide
tri-threeangle β†’ triangle
multi-manytasking β†’ multitasking
poly-manygon β†’ polygon
semi-halfcircle β†’ semicircle
quad-fourrant β†’ quadrant
penta-fivegon β†’ pentagon
hexa-sixgon β†’ hexagon
deca-tende β†’ decade
cent-hundredury β†’ century

Position & Relation Prefixes

These prefixes describe position, location, or relationship.

AffixMeaningExample
inter-between, amongnational β†’ international
trans-across, beyondatlantic β†’ transatlantic
sub-under, belowmarine β†’ submarine
super-above, overstar β†’ superstar
co-, com-with, togetherworker β†’ coworker, plete β†’ complete
pro-for, forwardactive β†’ proactive
auto-selfbiography β†’ autobiography
circum-aroundstance β†’ circumstance
intra-withinnet β†’ intranet
extra-outside, beyondordinary β†’ extraordinary
para-beside, beyondnormal β†’ paranormal
tele-distant, farphone β†’ telephone

Size & Degree Prefixes

These prefixes indicate size, amount, or degree of something.

AffixMeaningExample
over-too much, excessivelysleep β†’ oversleep
under-below, insufficientlyestimate β†’ underestimate
out-surpassing, externalperform β†’ outperform
ultra-beyond, extremelyviolet β†’ ultraviolet
hyper-over, aboveactive β†’ hyperactive
mega-large, millionbyte β†’ megabyte
micro-small, millionthscope β†’ microscope
mini-smallbus β†’ minibus
macro-largeeconomics β†’ macroeconomics
nano-extremely small, billionthtechnology β†’ nanotechnology

Common Suffixes

Noun Suffixes

These suffixes are added to words to form nouns, which can represent an action, state, or person.

AffixMeaningExample
-tion, -sionact or state ofcreate β†’ creation, decide β†’ decision
-mentaction or resultgovern β†’ government
-nessstate or quality ofhappy β†’ happiness
-er, -or, -istone who doesteach β†’ teacher, act β†’ actor, art β†’ artist
-itystate or quality ofequal β†’ equality
-shipposition held, state of beingfriend β†’ friendship
-ance, -encestate or quality ofimport β†’ importance, differ β†’ difference
-hoodstate or conditionchild β†’ childhood
-ologystudy ofbio β†’ biology
-domstate, realm, conditionfree β†’ freedom
-ageaction, result, collectionpack β†’ package
-ureaction, processfail β†’ failure
-eeone who receivesemploy β†’ employee
-ianperson concerned withmusic β†’ musician
-ismbelief, practice, conditioncapital β†’ capitalism

Adjective Suffixes

These suffixes turn other words into adjectives, which describe nouns.

AffixMeaningExample
-able, -iblecan be donecomfort β†’ comfortable, edible β†’ edible
-alhaving the quality ofnation β†’ national
-fulfull ofcare β†’ careful
-lesswithoutcare β†’ careless
-ouscharacterized bydanger β†’ dangerous
-ichaving the quality ofhero β†’ heroic
-ycharacterized byrain β†’ rainy
-ishhaving the quality of achild β†’ childish
-ivehaving the nature ofcreate β†’ creative
-ant, -entbeing in a stateimport β†’ important, differ β†’ different
-likeresemblinglife β†’ lifelike
-proofprotected againstwater β†’ waterproof
-boundrestricted tohome β†’ homebound
-freewithoutsugar β†’ sugar-free
-worthydeserving oftrust β†’ trustworthy
-erndirection, locationnorth β†’ northern

Verb Suffixes

These suffixes are used to create verbs, which are action words.

AffixMeaningExample
-atebecomeactive β†’ activate
-enbecomelight β†’ lighten
-ifymake or becomesimple β†’ simplify
-ize, -isebecomemodern β†’ modernize
-escebegin tofluor β†’ fluoresce

Adverb Suffixes

These suffixes typically turn adjectives into adverbs, describing how an action is performed.

AffixMeaningExample
-lyin the manner ofquick β†’ quickly
-ward(s)in a directionfor β†’ forward
-wisein relation toclock β†’ clockwise
-waysin a manner/directionside β†’ sideways
-foldmultiplied bytwo β†’ twofold

Tips for Learning Prefixes & Suffixes

  • βœ“Start with the most common: Focus on un-, re-, dis-, -tion, -ness, -able first-they appear in thousands of words.
  • βœ“Learn word families: When you learn "create," also learn creation, creative, creativity, recreate.
  • βœ“Break words apart: When you encounter an unfamiliar word, look for prefixes and suffixes you recognize.
  • βœ“Notice spelling changes: Some suffixes change spelling (happy β†’ happiness, create β†’ creation).
  • βœ“Practice with context: Use new words in sentences to remember both meaning and usage.

Frequently Asked Questions

Continue Building Your Vocabulary

Collocations

Natural word combinations

Idioms

Common English expressions

Phrasal Verbs

Verbs with particles

Homophones & Homonyms

Similar sounding words

Confused Words

Commonly mixed-up words

Irregular Verbs

Master verb forms