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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.

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

Tuesday’s moon follows the Aug. 19 super blue moon.

From Los Angeles Times • Sep. 17, 2024

It's a phenomenon - or, to use Chappell's terminology, a Femininomenon - that only occurs once in a blue moon.

From BBC • Sep. 13, 2024

It’s considered both a supermoon and a blue moon because of its proximity to earth and its timing during the season.

From Los Angeles Times • Aug. 19, 2024

“Not once in a blue moon, or a month of Sundays.”

From "The Graveyard Book" by Neil Gaiman




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