Answer: TRENCHANT

AnswerCrossword Clue
TRENCHANTBiting.
TRENCHANTIncisive.
TRENCHANTKeen
TRENCHANTPenetrating
TRENCHANTIncisive
TRENCHANTPenetrating insect?
trenchantvigorous
trenchantincisive, vigorous also TRENCHAND
trenchantincisive; keen