trenchant

1. (chiefly archaic) Fitted to trench or cut; gutting; sharp.Examples: "The trenchant blade, Toledo trusty, / For want of fighting was grown rusty, / And ate into itself, for lack / Of somebody to hew and hack."archaic

2. (chiefly archaic) Fitted to trench or cut; gutting; sharp.Examples: "The trenchant talonid is a character of some miacids and distinguishes these teeth from the hyaenodontids and oxyaenids."archaic

3. (figuratively) Keen; biting; vigorously articulate and effective; severe.Examples: "trenchant wit"; "His eyes, of the usual blue, were perhaps remarkably cold, and he certainly could make his glance fall on one as trenchant and heavy as an axe."; "His trenchant criticisms of the Church's repression […] include a discussion of the considerable 1938 success of the fledgling NODL in getting magazines removed from various points of sale."figuratively