bitter

Synonyms: absinthal absinthian acerb acerbic acid acrid amaroidal astringent harsh sour tart unsweetened vinegary

Antonyms: bland mild pleasant sweet

Synonyms: acrimonious alienated antagonistic begrudging biting caustic crabby divided embittered estranged fierce freezing hateful intense irreconcilable morose rancorous resentful sardonic severe sore sour stinging sullen virulent vitriolic with chip on shoulder

Antonyms: agreeable content genial kind nice pleasant sweet

Synonyms: afflictive annoying bad brutal calamitous cruel dire disagreeable displeasing distasteful disturbing galling grievous hard harsh heartbreaking hurtful inclement intemperate intense merciless offensive poignant provoking rigorous rugged ruthless savage severe sharp stinging unpalatable unpleasant vexatious woeful

Antonyms: good helping wonderful