Tasting sour or bitter. / (figuratively) Sharp, harsh, biting.

sourly; bitterly / In a sarcastic or cynical manner.

(rare) Bitterness of feeling. / (rare, medicine) Exacerbation, aggravation, deterioration.

simple past tense and past participle of acerbate

present participle of acerbate

comparative form of acerb: more acerb

plural of acerbity

(rare) Embittered; having a sour disposition or nature.

Sourness of taste, with bitterness and astringency, like that of unripe fruit. / Harshness, bitterness, or severity / (countable) Something harsh (e.g. a remark, act or experience).

(transitive) To exasperate; to irritate. / (transitive) To make bitter or sour.