2. (adj)acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic harsh or corrosive in tone "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 about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"; "a vitriolic critique"
Definition of 'acerb'
Webster Dictionary
1. (adj)acerb sour, bitter, and harsh to the taste, as unripe fruit; sharp and harsh
Definitions of acerb 
