Synonyms for trenchant

modified

1. Having a cutting edge

   cutting, incisive, keen, biting, pungent, severe, razor-fine; see also sharp 1.

   Antonyms dull*, blunt, flat.

2. Sharp intellectually

   unsparing, critical, emphatic, vigorous, impressive, strong, dynamic, pointed, intense, positive, weighty, salient, significant, pithy, sententious, crushing, forcible, crisp, caustic, concise, succinct, razor-sharp, comprehensive, pregnant, neat, to the point, graphic, explicit, ponderous; see also intelligent 1, profound 2.

   Antonyms weak*, shallow, feeble. See syn. study at incisive.incisive.