1. （言行）恶意的，刻薄的，尖刻的
If you describe someone's language or behaviour as vitriolic, you disapprove of it because it is full of bitterness and hate, and so causes a lot of distress and pain.

1. of a substance, especially a strong acid
capable of destroying or eating away by chemical action

Synonym: causticcorrosiveerosivemordant

2. harsh or corrosive in tone

e.g. 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

Synonym: acerbacerbicacidacridbitterblisteringcausticsulfuroussulphurousvirulent