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
There are also two types of blue moons: monthly and seasonal.
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Joyce Orlando, The Tennessean, 8 Aug. 2024
The last seasonal blue moon was in August 2021, and the next one won't occur until May 2027.
—Tiffany Acosta, The Arizona Republic, 16 Aug. 2024
The second definition − which arose from a misunderstanding of the original − is the monthly blue moon, referring to the second full moon in a single calendar month.
—Marley Malenfant, Austin American-Statesman, 16 Aug. 2024
As with supermoons, there are varying definitions for blue moons — monthly and seasonal.
—Riane Lumer, CNN, 19 Aug. 2024
See all Example Sentences for blue moon 
Joyce Orlando, The Tennessean, 8 Aug. 2024
The last seasonal blue moon was in August 2021, and the next one won't occur until May 2027.
—Tiffany Acosta, The Arizona Republic, 16 Aug. 2024
The second definition − which arose from a misunderstanding of the original − is the monthly blue moon, referring to the second full moon in a single calendar month.
—Marley Malenfant, Austin American-Statesman, 16 Aug. 2024
As with supermoons, there are varying definitions for blue moons — monthly and seasonal.
—Riane Lumer, CNN, 19 Aug. 2024
See all Example Sentences for blue moon
Recent Examples of Synonyms for blue moon
Noun
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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
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Printed with thermochromic ink, the stamp reveals a second image of the moon when a finger is pressed to it, and a sheet of 16 Forever stamps features a map of the eclipse path.Meg Jones, Milwaukee Journal Sentinel, 18 Aug. 2017
Noun
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Goldman Sachs’ list of top-performing longs in hedge funds has seen outsized gains in 2024, a sign that moves made by these firms have paid off this year.Alex Harring, CNBC, 21 Nov. 2024
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Recommended Joy Five years after fire, a shining Notre Dame is ready to reopen its doors Underpinning the currency appreciation is a new tax amnesty to lure Argentines to declare their hidden United States dollar savings – longs squirreled away in offshore bank accounts and under mattresses.Isabel Debre, The Christian Science Monitor, 10 Dec. 2024
Noun
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During this moon cycle, the moon will pass in front of Mars, which will be the closest and brightest on Wednesday.Ayana Archie, NPR, 13 Jan. 2025
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European names also include the ice moon, the old moon or the moon after Yule, originally a three to 12-day festival that occurred in pre-Christian Europe near the winter solstice, according to NASA.Ashley Strickland, CNN, 13 Jan. 2025
Noun
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Chris Sale In his first season with the Atlanta Braves at age 35, Sale made his most starts (29), recorded his lowest ERA (2.38), pitched more innings (177.2) and struck out more batters (225) in any season since 2018.Daniel R. Depetris, Newsweek, 11 Jan. 2025
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Dave Prater, Moore’s partner in Sam & Dave, died in a car accident at age 50 in 1988.Mikael Wood, Los Angeles Times, 11 Jan. 2025
Thesaurus Entries Near blue moon
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 21 Jan. 2025.
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