absent - present

abundant - scarce

accept - decline, refuse

accurate - inaccurate

admit - deny

advantage - disadvantage

against - for

agree - disagree

alive - dead

all - none, nothing

ally - enemy

always - never

ancient - modern

answer - question

antonym - synonym

apart - together

appear - disappear, vanish

approve - disapprove

arrive - depart

artificial - natural

ascend - descend

attic - cellar

attractive - repulsive

awake - asleep

backward - forward

bad - good

beautiful - ugly

before - after

begin - end

below - above

bent - straight

best - worst

better - worse, worst

big - little, small

bitter - sweet

black - white

blame - praise

bless - curse

bold - meek, timid

borrow - lend

bottom - top

bound - unbound, free

boundless - limited

boy - girl

brave - cowardly

bright - dim, dull

brighten - fade

broad - narrow

build - destroy

calm - windy, troubled

can - cannot, can't

capable - incapable

captive - free

careful - careless

cheap - expensive

cheerful - sad, discouraged, dreary

clear - cloudy, opaque

clever - stupid

clockwise - counterclockwise

close - far, distant

closed - ajar, open

clumsy - graceful

cold - hot

combine - separate

come - go

comfort - discomfort

common - rare

compulsory - voluntary

conceal - reveal

contract - expand

cool - warm

correct - incorrect, wrong

courage - cowardice

courteous - discourteous, rude

create - destroy

crooked - straight

cruel - kind

dangerous - safe

dark - light

day - night

daytime - nighttime

dead - alive

decline - accept, increase

decrease - increase

deep - shallow

definite - indefinite

demand - supply

despair - hope

dim - bright

disappear - appear

discourage - encourage

diseased - healthy

down - up

downwards - upwards

dreary - cheerful

dry - moist, wet

dull - bright, shiny

dusk - dawn

early - late

east - west

easy - hard, difficult

empty - full

encourage - discourage

end - begin, start

enter - exit

even - odd

expand - contract

export - import

exterior - interior

external - internal

fade - brighten

fail - succeed

false - true

famous - unknown

far - near

fast - slow

fat - thin

feeble - strong, powerful

few - many

find - lose

first - last

float - sink

fold - unfold

foolish - wise

for - against

fore - aft

forget - remember

fortunate - unfortunate

found - lost

free - bound, captive

frequent - seldom

fresh - stale

friend - enemy

full - empty

generous - stingy

gentle - rough

get - give

giant - tiny, small, dwarf

girl - boy

give - receive, take

glad - sad, sorry

gloomy - cheerful

go - stop

good - bad, evil

grant - refuse

great - tiny, small, unimportant

grow - shrink

guest - host

guilty - innocent

happy - sad

hard - easy

hard - soft

harmful - harmless

harsh - mild

hate - love

haves - have-nots

healthy - diseased, ill, sick

heaven - hell

heavy - light

help - hinder

here - there

hero - coward

high - low

hill - valley

hinder - help

honest - dishonest

horizontal - vertical

hot - cold

humble - proud

ill - healthy, well

immense - tiny, small

important - trivial

in - out

include - exclude

increase - decrease

inferior - superior

inhale - exhale

inner - outer

inside - outside

intelligent - stupid, unintelligent

intentional - accidental

interesting - boring

interesting - dull, uninteresting

interior - exterior

internal - external

join - separate

junior - senior

just - unjust

justice - injustice

knowledge - ignorance

known - unknown

landlord - tenant

large - small

last - first

laugh - cry

lawful - unlawful, illegal

lazy - industrious

leader - follower

left - right

lend -borrow

lengthen - shorten

lenient - strict

less - more

light - dark, heavy

like - dislike, hate

likely - unlikely

limited - boundless

little - big

long - short

loose - tight

lose - find

loss - win

loud - quiet

love - hate

low - high

loyal - disloyal

mad - happy, sane

major - minor

many - few

mature - immature

maximum - minimum

melt - freeze

merry - sad

messy - neat

minor - major

minority - majority

miser - spendthrift

misunderstand - understand

more - less

nadir - zenith

narrow - wide

near - far, distant

neat - messy, untidy

never - always

new - old

night - day

nighttime - daytime

no - yes

noisy - quiet

none - some

north - south

obedient - disobedient

odd - even

offer - refuse

old - new

old - young

on - off

open - closed, shut

opposite- same, similar

optimist - pessimist

out - in

outer - inner

over - under

past - present

patient - impatient

peace - war

permanent - temporary

plentiful - scarce

plural - singular

poetry - prose

polite - rude, impolite

possible - impossible

poverty - wealth, riches

powerful - weak

pretty - ugly

private - public

prudent - imprudent

pure - impure, contaminated

push - pull

qualified - unqualified

question - answer

quiet - loud, noisy

raise - lower

rapid - slow

rare - common

real - fake

regular - irregular

rich - poor

right - left, wrong

right-side-up - upside-down

rough - smooth

rude - courteous

safe - unsafe

same - opposite

satisfactory - unsatisfactory

scatter - collect

second-hand - new

secure - insecure

separate - join, together

serious - trivial

shallow - deep

shrink - grow

sick - healthy, ill

simple - complex, hard

singular - plural

sink - float

slim - fat, thick

slow - fast

sober - drunk

soft - hard

some - none

sorrow - joy

sour - sweet

sow -reap

start - finish

stop - go

straight - crooked

strict - lenient

strong - weak

success - failure

sunny - cloudy

sweet - sour

synonym - antonym

take - give

tall - short

tame - wild

them - us

there - here

thick - thin

tight - loose, slack

tiny - big, huge

together - apart

top - bottom

tough - easy, tender

transparent - opaque

true - false

truth - falsehood, lie, untruth

under - over

unfold - fold

unknown - known

unqualified - qualified

unsafe - safe

up - down

upside-down - right-side-up

upstairs - downstairs

us - them

useful - useless

vacant - occupied

vanish - appear

vast - tiny

victory - defeat

virtue - vice

visible - invisible

voluntary - compulsory

war - peace

wax - wane

weak - strong

wet - dry

white - black

wide - narrow

win - lose

wisdom - folly, stupidity

within - outside

wrong - right

yes - no

yin - yang

young - old

zenith - nadir

zip - unzip