TRENCHANT Meaning of TRENCHANT in English adj. 1 (of a style or language etc.) incisive, terse, vigorous. 2 archaic or poet. sharp, keen. trenchancy n. trenchantly adv.[ ME f. OF, part. of trenchier: see TRENCH ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012