/
ˈtrɛn(t)ʃ(ə)nt/
adj.
  - vigorous or incisive in expression or style.
 - archaic or literary (of a weapon or tool) having a sharp edge.
 
Derivative
- trenchancy n.
  - trenchantly adv.
 
Etymology
ME: from OFr., lit. ‘cutting’, pres. part. of trenchier (see trench).