as in months
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 moons
May 2027 and December 2028 will also bring blue moons, according to RMG.
—
Mariyam Muhammad, USA Today, 30 Apr. 2026
Super blue moons can also occur, but don’t be fooled by the name.
—Callum Sutherland, Time, 6 Oct. 2025
Mariyam Muhammad, USA Today, 30 Apr. 2026
Super blue moons can also occur, but don’t be fooled by the name.
—Callum Sutherland, Time, 6 Oct. 2025
Recent Examples of Synonyms for blue moons
Noun
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The academy is for female inmates, ages 13 to 18, who need mental health or substance abuse services, according to the Department of Juvenile Justice website.—
Grethel Aguila,
Miami Herald,
18 May 2026
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The resort’s Bula Club includes complimentary nanny service for kids under five, and for children ages six to 12, there are hands-on activities such as mangrove planting, sustainability lessons, reef education, storytelling, and visits to nearby villages.—
Regan Stephens,
Travel + Leisure,
18 May 2026
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
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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The technology could also support missions to Neptune and Triton, long-duration probes studying outer planet moons, and future Kuiper Belt explorers traveling farther than New Horizons.—
Aamir Khollam,
Interesting Engineering,
15 May 2026
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As part of its dry run at Mars, the spacecraft will also practice hunting for faint circumplanetary rings of dust that might originate from the planet’s small moons and be backlit by the sun into clearer visibility.—
Meghan Bartels,
Scientific American,
14 May 2026
Cite this Entry
“Blue moons.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moons. Accessed 22 May. 2026.
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