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
From familiar favorites like peanut butter cup and s’mores to more playful creations such as birthday cake and blue moon, Carrie’s Crispies has built a following for offering both nostalgic and unique takes on the classic treat.
—
Adrienne Davis, jsonline.com, 24 Mar. 2026
On May 31, sky-gazers can look forward to a blue moon, the second full moon in one calendar month.
—Lily Hautau, CNN Money, 27 Feb. 2026
These include three supermoons, two micromoons, a blood moon (total lunar eclipse) and a blue moon.
—Alexis Simmerman, Austin American Statesman, 29 Jan. 2026
Super blue moons can also occur, but don’t be fooled by the name.
—Callum Sutherland, Time, 6 Oct. 2025
See All Example Sentences for blue moon
Adrienne Davis, jsonline.com, 24 Mar. 2026
On May 31, sky-gazers can look forward to a blue moon, the second full moon in one calendar month.
—Lily Hautau, CNN Money, 27 Feb. 2026
These include three supermoons, two micromoons, a blood moon (total lunar eclipse) and a blue moon.
—Alexis Simmerman, Austin American Statesman, 29 Jan. 2026
Super blue moons can also occur, but don’t be fooled by the name.
—Callum Sutherland, Time, 6 Oct. 2025
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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Now, decades later, Maple longs to provide a good life for her son.—
Ishani Desai,
Sacbee.com,
10 May 2026
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Despite his physical power and favorable public image, Homelander longs to be taken more seriously by the company and the people.—
Encyclopedia Britannica,
Encyclopedia Britannica,
5 May 2026
Noun
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Language development, emotional regulation, problem-solving, and relationship-building all begin before age three.—
Tina Dello Russo,
Boston Herald,
10 May 2026
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Freeman remembered Cox, who died Saturday at age 84, as more of an impactful leader who exuded loyalty than as a baseball strategist.—
Doug Padilla,
Oc Register,
10 May 2026
Noun
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The sun and moon appear almost the same size in our sky by pure coincidence.—
Jamie Carter,
Space.com,
10 May 2026
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The main dial shows the day, date, and month, plus a moon phase display with a chronograph totalizer inside, day/night and leap year indicators, and even an indicator for the equation of time.—
Rachel Cormack,
Robb Report,
9 May 2026
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 16 May. 2026.
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