List of opposites
Here is a list of opposite words in English.
Abstract X concrete
Abundant X scanty
Accept X reject
Add X deduct
Affirm X deny
Affirmative X negative
Approve X condemn
Assemble X disperse
Brief X lengthy
Cancel X confirm
Changeable X constant
Chubby X skinny
Clumsy X graceful
Comedy X tragedy
Comic X serious
Concave X convex
Concrete X abstract
Confidence X diffidence
Contract X expand
Corrupt X honest
Cursed X blessed
Defeat X victory
Delete X insert
Deliberate X accidental
Departure X arrival
Descend X ascend
Disadvantageous X favourable / advantageous
Disastrous X fortunate / beneficial
Disclose X conceal
Dishearten X encourage
Disperse X assemble
Display X conceal
Diverse X similar
Divide X combine
Dwarf X giant
Earthly X heavenly
Elaborate X Simple
Elementary X Advanced
Encourage X discourage
Enjoyable X disagreeable / unpleasant
Entertaining X boring
Entire X partial
Exceptional X normal
Exhale X inhale
Expand X contract
Export X import
Exterior X interior
Famine X plenty
Fashionable X outdated
Faulty X correct
Ferocious X gentle
Flabby X firm
Following X preceding
Forbid X permit
Foreign X native
Former X latter
Frequent X rare
Friendship X enmity
Fruitful X fruitless
Gather X disperse
Goodwill X ill will
Guilt X innocence
Harsh X mild
Haughty X humble
Hazardous X safe
Hero X villain
Horizontal X vertical
Include X exclude
Increase X decrease
Inferior X superior
Inhale X exhale
Initial X final
Insult X flatter
Interior X exterior
Junior X senior
Liberty X slavery
Loyal X treacherous
Maximum X minimum
Miserly X generous
Mobile X stationary
Negative X positive
Normal X abnormal
Occasional X habitual
Optional X compulsory
Passive X active
Permanent X temporary
Presence X absence
Previous x public
Profit X loss
Reduce X increase
Refuse X accept
Repel X attract
Reveal X conceal
Rural X urban
Scorn X admiration
Severe X mild
Strength X weakness
Theoretical X practical
Transparent X opaque
Truth X falsehood
Wane X wax
Wide X narrow
Willingly X reluctantly
Wisdom X foolishness
Youthful X elderly