adj. 1. Forceful and clear; penetrating: a trenchant argument. 2. Caustic; cutting: a trenchant wit. 3. Distinct; clear-cut: "The times were felt to require ... trenchant distinctions between good and bad, right and wrong" (David Simpson). [Middle English, from Old French, cutting, from present participle of trenchier, to cut; see TRENCH.] trenchan·cy n. trenchant·ly adv. |
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