startle Synonyms

start alarm frighten surprise galvanize jump scare shock thunderstrike throw terrorize unsettle unnerve terrify stupefy stun overreact stagger spook shake unstring upset wince traumatize scare off powered bowl over rear back jolting galvanise take aback bushwhack dumbfound shake up terrorise consternate appal strike dumb to start zincify leave open-mouthed scarify scaring disquiet dismay disconcert deter daze daunt confound