Dictionary

false alarm

noun

: an alarm (such as a fire alarm) that is set off when it is not needed

: something that causes people to wrongly believe that something bad or dangerous is going to happen

Full Definition of FALSE ALARM

1
:  an alarm (as a fire or burglar alarm) that is set off needlessly
2
:  one causing alarm or excitement that proves to be unfounded
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First Known Use of FALSE ALARM

1578

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