warn or arouse to a sense of danger or call to a state of preparedness; "The empty house alarmed him"; "We alerted the new neighbors to the high rate of burglaries"
fill with apprehension or alarm; cause to be unpleasantly surprised; "I was horrified at the thought of being late for my interview"; "The news of the executions horrified us"
a device that signals the occurrence of some undesirable event
a clock that wakes a sleeper at some preset time
an automatic signal (usually a sound) warning of danger
SCARE
cause fear in; "The stranger who hangs around the building frightens me"; "Ghosts could never affright her"
cause to lose courage; "dashed by the refusal"
a sudden attack of fear
sudden mass fear and anxiety over anticipated events; "panic in the stock market"; "a war scare"; "a bomb scare led them to evacuate the building"