agitate alarm appall astound awe daunt demoralize deter disconcert discourage dishearten dismay faze horrify intimidate perturb petrify startle terrify terrorize unnerve affright browbeat bulldoze chill cow disquiet panic repel spook unhinge chill to the bone curdle the blood disburb discomfort make blood run cold make teeth chatter scare away scare off scare to death stiff strike terror into