1. [ adjective ] harsh or corrosive in tone
Synonyms: bitter blistering acid acrid venomous acerbic sulfurous sulphurous caustic virulent acerb

"an acerbic tone piercing otherwise flowery prose" "a barrage of acid comments" "her acrid remarks make her many enemies" "bitter words" "blistering criticism" "caustic jokes" "a sulfurous denunciation"

Related terms: unpleasant
2. [ adjective ] (chemistry) of a substance, especially a strong acid; capable of destroying or eating away by chemical action
Synonyms: corrosive erosive caustic
Related terms: destructive
Similar spelling:   vitriol