Synonyms are words that have the same or nearly the same meaning, such as big and large. Antonyms are words that have opposite meanings, such as big and small. This page gives a list of 159 common words with a synonym and an antonym for each, followed by how to choose the right synonym and how to form antonyms with prefixes.

Learning words in pairs is a quick way to grow your vocabulary: one word you know gives you two more. For a deeper study, see our lessons on antonyms (opposite words) and synonyms and their shades of meaning.

Definitions

Synonym = a word with the same or nearly the same meaning as another word (begin = start).
Antonym = a word with the opposite meaning (begin ≠ end).

How to Use the Lists

Each table gives one common synonym and one common antonym. Many words have more than one meaning, so the pair shown is the most usual one. For example, light is the opposite of dark in "a light room" but the opposite of heavy in "a light bag". Always check the pair against the sentence you are working with.

Synonyms and Antonyms List: Adjectives (Describing Words)

Adjectives A to D

Adjectives A to D with a synonym and an antonym
AdjectiveSynonymAntonym
ablecapableunable
abundantplentifulscarce
activeenergeticlazy
afraidscaredfearless
ancientage-oldmodern
angryfuriouscalm
awfulterriblewonderful
badpoorgood
beautifullovelyugly
bravecourageouscowardly
brightshiningdull
briefshortlengthy
calmpeacefulagitated
carefulcautiouscareless
cheapinexpensivecostly
cleanspotlessdirty
cleversmartstupid
coldchillyhot
complexcomplicatedsimple
cruelbrutalkind
dangerousriskysafe
darkdimlight
deadlifelessalive
deepprofoundshallow
difficulthardeasy
dirtyfilthyclean
dullboringexciting

Adjectives E to M

Adjectives E to M with a synonym and an antonym
AdjectiveSynonymAntonym
eagerkeenreluctant
earlyprematurelate
easysimpledifficult
emptyvacantfull
enormoushugetiny
expensivecostlycheap
fakefalsegenuine
fastquickslow
fatplumpthin
foolishsillywise
fragiledelicatesturdy
freshnewstale
friendlyamiablehostile
generouscharitablestingy
gentlemildharsh
gladpleasedsad
goodexcellentbad
happycheerfulsad
hardfirmsoft
honesttruthfuldishonest
humblemodestarrogant
importantsignificanttrivial
innocentblamelessguilty
interestingfascinatingboring
kindcaringcruel
largebigsmall
lazyidlehardworking
legallawfulillegal
longlengthyshort
loudnoisyquiet
moderncontemporaryold-fashioned

Adjectives N to Z

Adjectives N to Z with a synonym and an antonym
AdjectiveSynonymAntonym
narrowtightwide
neattidymessy
newrecentold
oldelderlyyoung
politecourteousrude
poorneedyrich
powerfulmightyweak
rareuncommoncommon
richwealthypoor
roughcoarsesmooth
safesecuredangerous
sharppointedblunt
shytimidbold
slowsluggishfast
sourtartsweet
strangeoddordinary
strongsturdyweak
thickdensethin
tightsnugloose
tinyminutehuge
truecorrectfalse
usefulhelpfuluseless
vagueunclearclear
valuablepreciousworthless
weakfeeblestrong
wetdampdry
widebroadnarrow
wisesensiblefoolish
youngyouthfulold

Synonyms and Antonyms List: Verbs (Action Words)

Verbs A to F

Verbs A to F with a synonym and an antonym
VerbSynonymAntonym
acceptreceivereject
achieveaccomplishfail
admirerespectdespise
agreeconsentdisagree
allowpermitforbid
arrivereachdepart
beginstartend
buildconstructdemolish
buypurchasesell
chooseselectreject
closeshutopen
collectgatherscatter
continuecarry onstop
createmakedestroy
criticisecondemnpraise
decreasereduceincrease
entergo inexit
falldroprise
finddiscoverlose

Verbs G to R

Verbs G to R with a synonym and an antonym
VerbSynonymAntonym
gainobtainlose
givedonatetake
helpassisthinder
hideconcealreveal
hurryrushdawdle
improveenhanceworsen
includecontainexclude
increasegrowdecrease
joinconnectseparate
keepretaindiscard
laughgigglecry
likeenjoydislike
loveadorehate
mendrepairbreak
obeyfollowdisobey
praiseapplaudcriticise
pulldragpush
punishpenalisereward
rememberrecallforget

Verbs S to Z

Verbs S to Z with a synonym and an antonym
VerbSynonymAntonym
shoutyellwhisper
startbeginstop
stophaltcontinue
strengthenreinforceweaken
succeedtriumphfail
supportbackoppose
wintriumphlose

Synonyms and Antonyms List: Nouns

Nouns with a synonym and an antonym
NounSynonymAntonym
abilityskillinability
advantagebenefitdisadvantage
beginningstartend
couragebraverycowardice
dangerperilsafety
defeatlossvictory
enemyfoefriend
failureflopsuccess
freedomlibertyslavery
happinessjoysorrow
hatredhatelove
healthfitnessillness
honestytruthfulnessdishonesty
hopeoptimismdespair
peacecalmwar
problemdifficultysolution
rewardprizepunishment
shortagelackabundance
victorytriumphdefeat
wealthrichespoverty

Synonyms and Antonyms List: Adverbs

Adverbs with a synonym and an antonym
AdverbSynonymAntonym
alwaysat all timesnever
carefullycautiouslycarelessly
gladlywillinglyunwillingly
loudlynoisilyquietly
oftenfrequentlyseldom
quicklyswiftlyslowly
usuallynormallyrarely
Tip

Learn a word with its pair. When you meet a new word in a book or on a notice board, look up one synonym and one antonym, and write all three together in your notebook.

How to Choose the Right Synonym

Synonyms rarely mean exactly the same thing. Before you replace a word, check these four things.

  1. Meaning in context. Bank has several meanings, so its synonym depends on the sentence.
  2. Collocation (words that normally go together). We say heavy rain, not strong rain, and make a mistake, not do a mistake.
  3. Formality. Buy is neutral, purchase is formal. Kids is informal, children is neutral.
  4. Feeling (positive or negative). Slim is positive, skinny is often negative; determined is positive, stubborn is negative.
Examples

✅ The teacher praised her for the neat work.
✅ The principal commended the students in the assembly (more formal).
❌ Strong rain fell all night. ✅ Heavy rain fell all night.
❌ I did a mistake in the test. ✅ I made a mistake in the test.

Words with similar meanings but different strength or feeling
WordStronger or different wordNote
bighuge, enormousHuge and enormous are much stronger than big.
angryfuriousFurious means extremely angry.
tiredexhaustedExhausted means completely tired.
thinslim, skinnySlim is positive; skinny can be negative.
smellfragrance, stinkA fragrance is pleasant; a stink is not.

Types of Antonyms

Three main types of antonyms
TypeMeaningExamples
GradableThere are levels between the two words.hot – cold (warm, cool in between); big – small
ComplementaryOne word or the other; nothing in between.alive – dead; true – false; pass – fail
RelationalThe words describe the same relationship from two sides.buy – sell; teacher – student; parent – child

How to Form Antonyms with Prefixes

Many antonyms are made by adding a prefix (a group of letters added to the beginning of a word) that means "not" or "the opposite of". The spelling of the base word does not change.

Prefixes that make antonyms, with examples
PrefixUsed beforeExamples
un-most adjectives and some verbshappy – unhappy; lock – unlock; fair – unfair
in-many adjectives, often Latin wordscomplete – incomplete; visible – invisible; active – inactive
im-words that begin with m or ppossible – impossible; polite – impolite; mature – immature
il-words that begin with llegal – illegal; logical – illogical; literate – illiterate
ir-words that begin with rregular – irregular; responsible – irresponsible; relevant – irrelevant
dis-verbs, adjectives and nounsagree – disagree; honest – dishonest; like – dislike
mis-verbs and nouns (wrongly, badly)behave – misbehave; trust – mistrust
non-nouns and adjectivesfiction – non-fiction; violent – non-violent; smoker – non-smoker

The suffix -less also gives opposites: hopeful – hopeless, careful – careless, useful – useless. For more, see Prefixes and Their Meanings and the post How Prefixes and Suffixes Can Double Your English Vocabulary.

Careful

Not every word with a prefix is the opposite of its base word. Invaluable does not mean “not valuable”: it means extremely valuable. Flammable and inflammable both mean "able to catch fire", and famous and infamous are not opposites (infamous means well known for something bad). Use nonflammable or not flammable for something that does not burn. When in doubt, check a dictionary.

Practice and Worksheets

After studying the lists, try the printable synonyms worksheet and the antonyms worksheet, both with answers. If you are not sure of your level, take the free English level test.

✍️ Quick Practice — Choose the Synonym

  1. The teacher was furious. (a) very angry (b) very happy (c) tired (d) surprised
  2. It is a difficult question. (a) easy (b) hard (c) short (d) strange
  3. Please begin the exam. (a) finish (b) cancel (c) start (d) check
  4. The box was enormous. (a) tiny (b) huge (c) empty (d) heavy
  5. He is very courageous. (a) brave (b) rude (c) clever (d) lazy
  6. We must repair the bench. (a) break (b) paint (c) mend (d) sell

Answers: 1 (a), 2 (b), 3 (c), 4 (b), 5 (a), 6 (c)

✍️ Quick Practice — Write the Antonym

  1. ancient
  2. generous
  3. victory
  4. increase
  5. hostile
  6. include
  7. shallow
  8. polite

Answers: 1 modern; 2 stingy (or selfish, mean); 3 defeat; 4 decrease (or reduce); 5 friendly; 6 exclude; 7 deep; 8 rude (or impolite)

✍️ Quick Practice — Add a Prefix to Make the Opposite

  1. possible
  2. legal
  3. agree
  4. regular
  5. happy
  6. honest

Answers: 1 impossible; 2 illegal; 3 disagree; 4 irregular; 5 unhappy; 6 dishonest

Summary

Synonyms are words with similar meanings and antonyms are words with opposite meanings. Learn the 159 pairs above in groups, and check meaning, collocation, formality and feeling before you choose a synonym. Many antonyms are formed with the prefixes un-, in-, im-, il-, ir-, dis-, mis- and non-, but check the dictionary because not every prefixed word is a true opposite. Practise with the synonyms and antonyms worksheets.