"mordacious" in the adjective sense
1. barbed, biting, nipping, pungent, mordacious
capable of wounding
"a barbed compliment"
"a biting aphorism"
"pungent satire"
2. mordacious
biting or given to biting
"they deliberately gave me a skittish and mordacious mount"
Source: WordNet® (An amazing lexical database of English)
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