frightened
abashed, affrighted (archaic) afraid, alarmed, cowed, dismayed, frozen, get the wind up, in a cold sweat, in a panic, in fear and trepidation, numb with fear, panicky, petrified, scared, scared shitless (taboo slang) scared stiff, shit-scared (taboo slang) startled, terrified, terrorized, terror-stricken, unnerved