Is scared of someone's shadow - Idioms by The Free Dictionary
be scared of (one's) (own) shadow (redirected from is scared of someone's shadow)
be scared of (one's) (own) shadow
To be easily or constantly spooked, nervous, timid, afraid, or fearfully suspicious. I can't say I have much faith in Johnny helping us on this expedition—that boy's scared of his own shadow!
be frightened/nervous/scared of your own ˈshadow be very easily frightened; be very nervous: Since the attack he’s been a changed man. He’s nervous of his own shadow and doesn’t like to go out alone at night.