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
-
There's plenty of beachfront for all ages to enjoy, and the pool is perfect for kids to swim and play.—
Condé Nast,
Condé Nast Traveler,
10 Mar. 2026
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General admission tickets start at $33 for adults, $20 for children ages 4-12 and $24 for students and military (with ID) or seniors 65 and older.—
Ana Gutierrez,
Austin American Statesman,
9 Mar. 2026
Noun
-
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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Furthermore, the team’s study offered the first visual proof of the YORP effect, where sunlight makes asteroids spin faster until chunks of material break off, sometimes forming moons.—
Bojan Stojkovski,
Interesting Engineering,
8 Mar. 2026
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The contrast between this matte dark green and the subtle sparkly gold half moons is really pretty.—
Kara Jillian Brown,
InStyle,
7 Mar. 2026
Cite this Entry
“Blue moons.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moons. Accessed 12 Mar. 2026.
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