1Denoting or using biting sarcasm or invective.‘You've barely spoken a word all night, and haven't uttered so much as one mordacious comment.’
- ‘His mordacious warnings about the bleak future of NATO.’
- ‘The more he intermingles mordacious taunts with earnest reflections on the feelings of a man suffocated by a less than satisfying matrimony, the harder it is to take him seriously.’
- ‘Annette Savage warned me about writing anything funny or mordacious about the Spurs.’
2(of a person or animal) given to biting.
incisive, highly effective, penetrating, cutting, mordant, trenchant
- ‘A small-scale musical in which that mordacious man-about-necks (Dracula) figures prominently.’
Mid 17th century from Latin mordax, mordac- ‘biting’ + -ious.
Are You Learning English? Here Are Our Top English Tips