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
Notably, the singer also employed cerulean blue visuals, complete with a bright blue moon, for her American Music Awards performance.
—Maya Georgi, Rolling Stone, 26 May 2026
This month's blue moon is the second full moon in a single calendar month.
—Sara Tenenbaum, CBS News, 22 May 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
Notably, the singer also employed cerulean blue visuals, complete with a bright blue moon, for her American Music Awards performance.
—Maya Georgi, Rolling Stone, 26 May 2026
This month's blue moon is the second full moon in a single calendar month.
—Sara Tenenbaum, CBS News, 22 May 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 star power continued at City Hall, where Spike Lee, Patrick Ewing and Carmelo Anthony were among those who went from float ride-a-longs to seats at the ceremony.—
Peter Sblendorio,
New York Daily News,
18 June 2026
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This year’s 10-day-long edition brought together an international slate of independent films across narrative, documentary, animation, experimental and short-form categories.—
Matt Minton,
Variety,
9 June 2026
Noun
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In an age of heightened peer pressures, such as teen takeovers, leaders tell CBS News Detroit that good old-fashioned fun is the way to bring all ages together.—
Julia Avant,
CBS News,
21 June 2026
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The typical household in the 65-74 age range has about $200,000 in retirement accounts, according to the 2022 federal Survey of Consumer Finances.—
Daniel de Visé,
USA Today,
21 June 2026
Noun
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The Virgo moon offers opportunities to share what’s on your mind with others.—
USA TODAY,
USA Today,
20 June 2026
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On Tuesday, June 23, a 70%-illuminated waxing gibbous moon will shine next to Spica.—
Jamie Carter,
Space.com,
19 June 2026
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 24 Jun. 2026.
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