Answer:

flinch

Answer	Crossword Clue
FLINCH	Shrink back
FLINCH	React defensively
FLINCH	Shrink

FLINCH	Start
FLINCH	Draw back
FLINCH	Show pain
FLINCH	Recoil slightly, as from an oncoming punch
FLINCH	Recoil
FLINCH	Reflex response to a sudden pain