Hit (an insect) sharply (4)
I believe the answer is:
swat
(Other definitions for swat that I've seen before include "Strike sharply (at fly?)" , "Hit a wasp or fly" , "Hit smartly" , "Smack (a fly?)" , "deliver blow" .)
I believe the answer is:
swat
(Other definitions for swat that I've seen before include "Strike sharply (at fly?)" , "Hit a wasp or fly" , "Hit smartly" , "Smack (a fly?)" , "deliver blow" .)