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
The August 2025 full moon is not a rare super blue moon.
—
Tiffany Acosta, AZCentral.com, 2 Aug. 2025
This spectacle will have a window of ideal visibility through February 21.
March 14: Total lunar eclipse
Sometimes, full moons get called colorful names that are a bit of a fake-out: A blue moon isn’t really blue, and a pink moon isn’t really pink.
—Carlyn Kranking, Smithsonian Magazine, 30 Dec. 2024
Their version of Superman was made with blue moon, red pop and lemon flavors.
—Jalen Williams, Detroit Free Press, 22 Dec. 2024
There's also a lot of supermoons in 2024 — four in a row, in fact, which began in August with a rare seasonal blue moon.
—John Tufts, The Courier-Journal, 4 Sep. 2024
See All Example Sentences for blue moon
Tiffany Acosta, AZCentral.com, 2 Aug. 2025
This spectacle will have a window of ideal visibility through February 21.
March 14: Total lunar eclipse
Sometimes, full moons get called colorful names that are a bit of a fake-out: A blue moon isn’t really blue, and a pink moon isn’t really pink.
—Carlyn Kranking, Smithsonian Magazine, 30 Dec. 2024
Their version of Superman was made with blue moon, red pop and lemon flavors.
—Jalen Williams, Detroit Free Press, 22 Dec. 2024
There's also a lot of supermoons in 2024 — four in a row, in fact, which began in August with a rare seasonal blue moon.
—John Tufts, The Courier-Journal, 4 Sep. 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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On the surface, Trump longs for grandeur.—
Michelle Goldberg,
Mercury News,
23 Oct. 2025
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Last week, even though the Chiefs did a great job containing him (Gibbs averaged 4 yards per carry, with a long of just 15 yards), Gibbs got 17 carries, including a whopping nine on the Lions' first drive.—
Tyler Everett,
MSNBC Newsweek,
20 Oct. 2025
Noun
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In the meantime, read on for what October’s first quarter moon means for you.—
Valerie Mesa,
PEOPLE,
28 Oct. 2025
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Mykal-Michelle Harris from Raven’s Home guest-stars as Ruby, a mischievous moon imp who tricks Vee.—
Allison McClain Merrill,
Parents,
27 Oct. 2025
Noun
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What 21-year-old Roman Kantserov is doing in the KHL so far this season is uncommon for players his age.—
Scott Powers,
New York Times,
25 Oct. 2025
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Japan, one of the world’s most homogeneous nations, faces deepening labor shortages as its birth rate plummets and its population ages.—
Micah McCartney,
MSNBC Newsweek,
25 Oct. 2025
Cite this Entry
“Blue moon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/blue%20moon. Accessed 30 Oct. 2025.
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