Dictionary definition · alarm
noun
- fear resulting from the awareness of danger
- a device that signals the occurrence of some undesirable event
- an automatic signal (usually a sound) warning of danger
- a clock that wakes a sleeper at some preset time
verb
- fill with apprehension or alarm; cause to be unpleasantly surprised"I was horrified at the thought of being late for my interview"
- warn or arouse to a sense of danger or call to a state of preparedness"The empty house alarmed him"
Similar words
Source: Open English WordNet (CC BY 4.0).