as in months
a long or seemingly long period of time
once in a blue moon we'll get dressed up and eat in a fancy restaurant
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Recent Examples of blue moons
Super blue moons can also occur, but don’t be fooled by the name.
—
Callum Sutherland, Time, 6 Oct. 2025
Black moons are referenced like blue moons, which are defined as the third full moon in an astronomical season containing four full moons.
—Janet Loehrke, USA Today, 21 Aug. 2025
Callum Sutherland, Time, 6 Oct. 2025
Black moons are referenced like blue moons, which are defined as the third full moon in an astronomical season containing four full moons.
—Janet Loehrke, USA Today, 21 Aug. 2025
Recent Examples of Synonyms for blue moons
Noun
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All other ages were in single digits, SSA said.—
Medora Lee,
USA Today,
5 Oct. 2025
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Police discovered that two men, ages 37 and 41, had sustained gunshot wounds to the head.—
Charlotte Phillipp,
PEOPLE,
5 Oct. 2025
Noun
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There were handoffs on third-and-longs.—
Alex Zietlow,
Charlotte Observer,
29 Sep. 2025
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One longs to see a full scene of Candy in action onscreen or in a home video, rather than just snippets.—
Beandrea July,
IndieWire,
5 Sep. 2025
Cite this Entry
“Blue moons.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moons. Accessed 10 Oct. 2025.
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