Noun
-
a clock that wakes a sleeper at some preset time
- alarm clock -
an automatic signal (usually a sound) warning of danger
- warning signal -
a device that signals the occurrence of some undesirable event
- warning device - alarm system -
fear resulting from the awareness of danger
Verb
-
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"