false alarm

noun

1
: an alarm (such as a fire or burglar alarm) that is set off needlessly
2
: something causing alarm or excitement that proves to be unfounded

Examples of false alarm in a Sentence

A false alarm drew firefighters to the school. The report that the factory would be closing was a false alarm. He thought he might be having a heart attack, but his chest pains were just a false alarm.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That false alarm didn’t stop Raney from coaching. Greg Riddle, Dallas Morning News, 2 Apr. 2026 Questions remain over funding costs exceeding $10,000 per system, effectiveness amid false alarms, and whether the approach addresses Georgia’s gun access laws. Jeff Amy, Los Angeles Times, 31 Mar. 2026 Authorities later determined that incident involved a false alarm, but officers were actively investigating at the time. Aamir Khollam, Interesting Engineering, 24 Mar. 2026 And even supporters of the systems say searchers can become dulled by a multitude of false alarms and miss the few actual weapons. CBS News, 24 Mar. 2026 See All Example Sentences for false alarm

Word History

First Known Use

1578, in the meaning defined at sense 1

Time Traveler
The first known use of false alarm was in 1578

Browse Nearby Words

Cite this Entry

“False alarm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/false%20alarm. Accessed 6 Apr. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster