Synonyms: dismay, horrify, appal, appall, alarm
Definition: fill with apprehension or alarm; cause to be unpleasantly surprised
Usage: I was horrified at the thought of being late for my interview; The news of the executions horrified us
Similar words: affright, fright, frighten, scare
Definition: cause fear in
Usage: The stranger who hangs around the building frightens me; Ghosts could never affright her