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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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
-
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
-
Zac longs for more family time.—
Kathleen Walsh,
Vulture,
13 Mar. 2026
-
Selling programs have been relentless in the S & P 500, as many of these algorithmic systems look to push ranges (both lower and higher), flushing weak longs out of the market.—
Jeff Kilburg,
CNBC,
6 Mar. 2026
Noun
-
Acquaintances often put my physical age at thirty.—
Han Ong,
New Yorker,
15 Mar. 2026
-
Those of us of a certain age know that the exact same thing happened when Wilt scored 100 in 1962.—
Los Angeles Times,
Los Angeles Times,
14 Mar. 2026
Noun
-
Nearly everything Noma does is news; the restaurant’s influence—and that of its head chef, co-owner, and public face, René Redzepi—sends ripples through the culinary world like a rogue moon.—
Helen Rosner,
New Yorker,
15 Mar. 2026
-
On the walls, some embossed with seashells, are moon carvings and brass suns, glossy lacquer minibars in baby blues and oxblood reds, and wonky puzzle piece doorknobs.—
Condé Nast,
Condé Nast Traveler,
14 Mar. 2026
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 21 Mar. 2026.
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