Adjective vitriolic has 2 senses
- acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, venomous, 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"
Antonym: pleasant (indirect, via unpleasant)
- caustic, corrosive, erosive, vitriolic - of a substance, especially a strong acid; capable of destroying or eating away by chemical action
Antonym: constructive (indirect, via destructive)
,