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". Synonyms:acerb, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, virulent, vitriolic.
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