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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That’s the message from a new AARP survey of American voters, with a focus on women ages 50 and over.—
Daniel de Visé,
USA Today,
16 Feb. 2026
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The Ski & Ride School offers group and private lessons for all ages, with age-specific kids’ programs, camps, and adaptive instruction.—
Denny Lee,
Travel + Leisure,
16 Feb. 2026
Noun
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Those tush-pushes can’t beat you if The Winter Soldier’s facing third-and-forevers.—
Joe Nguyen,
Denver Post,
17 Jan. 2026
Noun
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The narrator cries, rages, longs for the living body and the lively boy, and obsesses over painful details, especially the bleak journey by sea that brought the remains of his beloved friend back home.—
Kathryn Schulz,
New Yorker,
9 Feb. 2026
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Before long, the film will shift gears to a third main character, Madame Suman’s daughter-in-law Nat (a steely Davika Hoorne), who recently died of lung disease and longs for her still-living husband March (Witsarut Himmarat).—
Amy Nicholson,
Los Angeles Times,
4 Feb. 2026
Noun
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Robotic probes proved increasingly versatile and successful, eventually visiting every planet in the solar system as well as a scattering of moons, comets, and asteroids.—
New Atlas,
New Atlas,
15 Feb. 2026
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The accoutrements have been carefully hand-hewn and gilded, boasting an attractive luster and the faces of a sun puckering her lips plus two sleepy moons on the earrings.—
Stacia Datskovska,
Footwear News,
11 Feb. 2026
Cite this Entry
“Blue moons.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moons. Accessed 22 Feb. 2026.
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