trenchant

Fitted to trench or cut; gutting; sharp.

The trenchant blade, Toledo trusty, / For want of fighting was grown rusty, / And ate into itself, for lack / Of somebody to hew and hack.

Fitted to trench or cut; gutting; sharp.

The trenchant talonid is a character of some miacids and distinguishes these teeth from the hyaenodontids and oxyaenids.

Keen; biting; vigorously articulate and effective; severe.

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.