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Definitions

blue moon

[bloo moon] / ˈblu ˈmun /
NOUN
long period of time
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Wright: Every blue moon, they would be in a good mood.

From Los Angeles Times • Apr. 16, 2025

Once in a blue moon, a person is willing to do the hard internal work that leads to real, sustainable change.

From Salon • Mar. 21, 2025

Monday’s super blue moon will kick off four consecutive supermoons this year.

From Los Angeles Times • Aug. 19, 2024

Despite being called a blue moon, the moon doesn't actually turn blue.

From BBC • Aug. 19, 2024

But every weekend, there are at least a handful that catch his ear, and once in a blue moon, there is a singer or a song that makes him jump out of his seat.

From "Blink" by Malcolm Gladwell




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