alarm
- n fear resulting from the awareness of danger
- n a device that signals the occurrence of some undesirable event
- n an automatic signal (usually a sound) warning of danger
- n a clock that wakes a sleeper at some preset time
- v fill with apprehension or alarm; cause to be unpleasantly surprised
- v warn or arouse to a sense of danger or call to a state of preparedness
The empty house alarmed him