alarm

noun

UK/əˈlɑːm/
US/əˈlɑːrm/

Definitions of alarm noun

warning

  1. Countable

    A warning of danger, typically a loud noise or flashing light.

    • Should any issues arise, activate the alarm by pulling the emergency cord.

    • The initial two bomb alerts were false alarms; however, the third was genuine.

    • An alarm was immediately triggered after the sound of gunshots.

device

  1. B1Countable

    A device that emits a loud sound to signal danger.

    • burglar alarm, car alarm, fire alarm, smoke alarm

    • The building is equipped with a state-of-the-art alarm system.

    • They installed a new alarm to enhance security.

  2. B1Countable

    An electronic device, such as a watch or computer, with an alarm feature can be programmed to produce a sound at a specified time.

    • I set an alarm on my phone to make sure I don't miss the meeting.

    • She uses the alarm on her watch as a reminder to take her medication.

time

  1. A2Countable

    An alarm clock.

    • I set my alarm clock for seven o'clock every morning.

    • He turned off the alarm clock and went back to sleep.

emotion

  1. C2Uncountable

    A sudden feeling of worry and fear, particularly about the possibility of something dangerous or unpleasant occurring.

    • I chose not to inform her of his lateness, as I wished to avoid causing her any alarm.

    • The villagers expressed considerable alarm upon hearing about the proposed new road.

    • His sudden decline in health caused alarm among his family members.

verb

UK/əˈlɑːm/
US/əˈlɑːrm/

Definitions of alarm verb

  1. C1Transitive

    To cause someone to feel worried or frightened.

    • I didn't want to alarm him, so I didn't mention her illness.

    • The findings in the report alarmed the scientists.

    • She did not want to alarm him by revealing the bad news.

Idioms

  • raise the alarm

    to alert people to a danger or problem that needs attention.

    Some employees at the company raised the alarm when they noticed discrepancies in the financial reports.