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
The last blue moon was on August 31, 2023, and the next one will come on December 31, 2028, according to EarthSky.
—
Connor Greene, Time, 29 May 2026
The second of these moons is called a blue moon — a calendrical blue moon, to be precise.
—Avni Trivedi, CNN Money, 29 May 2026
The third full moon in a single season with four full moons is also sometimes referred to as a blue moon, though the actual color of the lunar disk remains normal for both definitions!
—Anthony Wood, Space.com, 1 May 2026
That's one definition, but blue moons come in two different varieties: monthly and seasonal.
—John Tufts, IndyStar, 28 Apr. 2026
See All Example Sentences for blue moon
Connor Greene, Time, 29 May 2026
The second of these moons is called a blue moon — a calendrical blue moon, to be precise.
—Avni Trivedi, CNN Money, 29 May 2026
The third full moon in a single season with four full moons is also sometimes referred to as a blue moon, though the actual color of the lunar disk remains normal for both definitions!
—Anthony Wood, Space.com, 1 May 2026
That's one definition, but blue moons come in two different varieties: monthly and seasonal.
—John Tufts, IndyStar, 28 Apr. 2026
See All Example Sentences for blue moon
Recent Examples of Synonyms for blue moon
Noun
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Miami trailed 1-0 fast, in the sixth minute, when the defense left Guilherme Biro unmarked for a downward header off a corner kick, gifting Biro the forever-history of the first goal in the new stadium.—
Miami Herald,
Miami Herald,
5 Apr. 2026
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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 final chapters focus on 50-year-old Inga trying to have a relationship with her mother, who is falling into dementia and longs for the old nomadic life.—
Mary Ann Grossmann,
Twin Cities,
7 June 2026
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Third-and-long favors the defense, so nothing came easy on Tuesday.—
Zack Rosenblatt,
New York Times,
3 June 2026
Noun
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While the Reuters/Ipsos survey found that 89% of Democrats believe Trump has become erratic with age, only 30% of Republicans say the same.—
Zac Anderson,
USA Today,
7 June 2026
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His introduction came at age 10, when RAGBRAI, which is an acronym for the Register's Annual Great Bicycle Ride Across Iowa, passed through his hometown of Oelwein (a town with a population of fewer than 6,000), filling yards with tents and strangers.—
Arati Menon,
Condé Nast Traveler,
7 June 2026
Noun
-
Andreeva managed the windy conditions well, mixing in a strong serve with a forehand slice and even some moon balls.—
Adam Zagoria,
Forbes.com,
6 June 2026
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No one is expecting any miracles from the Sox, especially without Murakami’s moon shots.—
Paul Sullivan,
Chicago Tribune,
6 June 2026
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 9 Jun. 2026.
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