"alarm" in the noun sense
1. alarm, dismay, consternation
fear resulting from the awareness of danger
2. alarm, warning device, alarm system
a device that signals the occurrence of some undesirable event
3. alarm, alert, warning signal, alarum
an automatic signal (usually a sound) warning of danger
4. alarm clock, alarm
a clock that wakes a sleeper at some preset time
"alarm" in the verb sense
1. dismay, alarm, appal, appall, horrify
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"
2. alarm, alert
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"
Source: WordNet® (An amazing lexical database of English)
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