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English definition of “alarm”

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alarm

noun  /əˈlɑrm/ us  

alarm noun (ANXIETY)

[U] sudden anxiety and fear, esp. that something very bad or dangerous might happen: Nicholas detected a note of alarm in her voice.

alarm noun (WARNING)

[C] a warning signal such as a loud noise or flashing light that gets your immediate attention, or a device that produces such a signal: Firefighters said the tragedy could have been avoided if the house had had smoke alarms.

alarm

verb [T]  /əˈlɑrm/ us  
to feel or cause sudden anxiety and fear: Guests were sometimes alarmed to learn that we never locked the doors of the house.
alarming
adjective  /əˈlɑr·mɪŋ/ us  
Stock prices began to rise at an alarming rate.
(Definition of alarm from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“alarm” in American English

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