Antonyms

accurate – inaccurate

active, energetic – inactive, passive

attentive – inattentive

awful, terrible – great, excellent, wonderful

awkward, clumsy – skillful (BrE: skilful)

beautiful, attractive, good-looking, pretty – ugly

best – worst

big, large – little, small

bold, confident – timid, shy

brave, bold – afraid, frightened

bright, colorful – dull, colorless

busy, occupied – free

calm, quiet – noisy, excited

careful, cautious – careless

cheerful – gloomy

clean, neat – dirty

clever – foolish, stupid

cold, cool – hot, warm

comfortable, cozy – uncomfortable

confident, sure – not sure

constructive – destructive