as in forever
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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Example Sentences
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Recent Examples of blue moon
Super blue moons can also occur, but don’t be fooled by the name.
—
Callum Sutherland, Time, 6 Oct. 2025
But sometimes, once in a magical blue moon, a star will stray from the norm—and pop up in the most random of places.
—Christian Allaire, Vogue, 18 Sep. 2025
But a blue moon isn’t supposed to last for a year.
—Brett Owens, Forbes.com, 1 Sep. 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
See All Example Sentences for blue moon
Callum Sutherland, Time, 6 Oct. 2025
But sometimes, once in a magical blue moon, a star will stray from the norm—and pop up in the most random of places.
—Christian Allaire, Vogue, 18 Sep. 2025
But a blue moon isn’t supposed to last for a year.
—Brett Owens, Forbes.com, 1 Sep. 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
See All Example Sentences for blue moon
Recent Examples of Synonyms for blue moon
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
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One way to mess with an option team’s Plan A is to not only stick them with third-and-forevers, but to put them in an early hole, making them throw out of desperation.—
Sean Keeler,
The Denver Post,
14 Sep. 2019
Noun
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Participants will be allowed to hand-pick 32 colors from the 40-foot-long Pick Your Pack wall at the attraction.—
Dewayne Bevil,
The Orlando Sentinel,
25 Mar. 2026
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Donica, across from her, is on sturdier ground, fearsome to the point of awe-inspiring in the sustained fury of his fermatas, though his considerable force as a performer longs to be shaped more cleanly.—
Jackson McHenry,
Vulture,
19 Mar. 2026
Noun
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Horseback riding is a focus for all ages here, but other activities include hiking, bicycling, golf, fishing, and an on-site spa.—
Julie Bielenberg,
USA Today,
4 Apr. 2026
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What’s more, the people targeted for new work rules are working-age adults, ages 19 to 64.—
Andre Mouchard,
Oc Register,
4 Apr. 2026
Noun
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Korth pointed out that ice is a perennial plumbing issue for moon missions going back to NASA’s shuttle program.—
Joseph Howlett,
Scientific American,
4 Apr. 2026
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Hera will visit the asteroid Didymos and its moon Dimorphos as part of the NASA/ESA Asteroid Impact and Deflection Assessment (AIDA) collaboration.—
Richard Tribou,
The Orlando Sentinel,
4 Apr. 2026
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 6 Apr. 2026.
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