Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “alarm”

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)
What is the pronunciation of alarm?
Add Cambridge dictionaries to your browser to your website

“alarm” in American English

More American English definitions for “alarm”

Definitions of “alarm” in other dictionaries

Word of the Day

look on the bright side

to find good things in a bad situation

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More