vitriolic (
http://definr.com/vitriolic)
adj 1: 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" [syn:
acerb,
acerbic,
acid,
acrid,
bitter,
blistering,
caustic,
sulfurous,
sulphurous,
venomous,
virulent]
2: of a substance, especially a strong acid; capable of
destroying or eating away by chemical action [syn:
caustic,
corrosive,
erosive]