From Longman Dictionary of Contemporary Englishmordantmor‧dant /ˈmɔːdənt $ ˈmɔːr-/ adjective → mordant wit/satire/humour
Examples from the Corpus
mordant• But the play's compassion and mordant comedy make for compelling viewing.• She was totally guileless, honest, with a mordant sense of humour and sardonic wit.• He showed his willingness to trade his mordant wit for the required political cliches.Origin mordant (1400-1500) French present participle of mordre “to bite”, from Latin mordere 