false alarm

USAGE SUMMARY

"false alarm" is correct and usable in written English.
It is generally used to describe a situation in which a potential danger has been mistakenly perceived or a warning has been given unnecessarily. For example: "It was a false alarm; the police found nothing suspicious in the neighborhood."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

False alarm, Yankee fans.

The New York Times - Sports

Another false alarm.

The New York Times - Sports

Nope, false alarm.

The New York Times - Sports

False alarm, fortunately.

The New Yorker

9.05pm: Sorry, false alarm.

The Guardian

That's a false alarm.

The New York Times

False alarm this time.

Nature

GAH! Another false alarm!

MIT Technology Review

It was a false alarm.

The New York Times

It was another false alarm.

The New York Times

"We received a false alarm.

The Guardian

Expert writing Tips

Best practice

In scientific writing, prefer "false positive" when referring to statistical errors, but keep "false alarm" for the broader event.

Common error

Avoid using "false alarm" when you mean someone is lying or manipulating others to gain attention; in those cases, the idiom "cry wolf" is more appropriate as it implies intent rather than a technical or observational error.

Linguistic Context

As a noun phrase, "false alarm" serves to identify a warning or signal that is later revealed to be erroneous or unnecessary. According to Ludwig, it functions primarily as the subject or object of a sentence to denote a mistake in detection or a harmless incident initially perceived as a threat.

Expression frequency: Very common

Frequent in

News & Media

55%

Science

30%

General Discussion

15%

Less common in

Poetry & Literature

5%

Legal Documents

3%

Social Media

2%

Ludwig's WRAP-UP

The phrase "false alarm" is a versatile and essential tool in the English language, serving to bridge the gap between initial panic and eventual relief. Ludwig AI data shows that it is as home in high-stakes journalism like The New York Times as it is in complex scientific journals discussing signal detection. Whether you are describing a literal fire siren that went off by mistake or a figurative sports rumor that didn't materialize, this phrase communicates error and resolution with clarity. By distinguishing it from more technical terms like "false positive" or idioms like "cry wolf", writers can ensure their message is both accurate and contextually appropriate.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

false alert

Commonly used in digital systems and security monitoring.

incorrect alert

A straightforward, plain-English alternative.

false positive

A technical and scientific term used specifically in data and medical testing.

false scare

Emphasizes the emotional reaction or fear caused by the mistake.

erroneous warning

A more formal and descriptive alternative suitable for official reports.

cry wolf

An idiomatic expression referring to the intentional act of giving a false alarm.

bogus alarm

A more informal or blunt way to dismiss an alert as fake.

phantom threat

Describes a perceived danger that does not actually exist.

spurious signal

Specific to engineering and communications, referring to noise perceived as data.

unfounded fear

Focuses on the internal psychological state rather than the external signal.

FAQs

How do I use "false alarm" in a professional email?

You can use it to correct a previous statement, such as: "Please disregard my last email regarding the deadline; it was a false alarm."

What is a more formal way to say "false alarm"?

In formal or technical reports, you might use "erroneous alert" or "unfounded warning" to sound more precise.

Is it "false alarm" or "false-alarm"?

It is typically written as two words, "false alarm", when used as a noun. You only use a hyphen if you are using it as a compound modifier before another noun, though this is rare.

What is the difference between a "false alarm" and a "false positive"?

A "false alarm" refers to the event of the warning itself, while a ""false positive"" is the specific statistical result where a test incorrectly indicates the presence of a condition.