variants
or chiefly British aeon
as in forever
a long or seemingly long period of time
it's been eons since I saw a movie at the multiplex glaciers that formed eons ago
Synonyms & Similar Words
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of eon
According to the study authors, dark energy’s effect on the universe isn’t fixed, but appears to have shifted over the eons.
—
Rupendra Brahambhatt, Interesting Engineering, 23 Aug. 2025
The flora and fauna of Kenya have thrived across the region for eons, and at Mukima Manor, wildlife conservation is a core tenet of the hotel’s ethos.
—Jared Ranahan, Forbes.com, 21 Aug. 2025
Sentience seemingly has intensified, in certain twigs of life’s tree, over the aeons.
—Thomas Moynihan, Big Think, 20 Aug. 2025
Over eons, these increasingly dense elements burn away within the core as lighter elements incinerate across successive, encompassing layers.
—Andrew Paul, Popular Science, 20 Aug. 2025
See All Example Sentences for eon
Rupendra Brahambhatt, Interesting Engineering, 23 Aug. 2025
The flora and fauna of Kenya have thrived across the region for eons, and at Mukima Manor, wildlife conservation is a core tenet of the hotel’s ethos.
—Jared Ranahan, Forbes.com, 21 Aug. 2025
Sentience seemingly has intensified, in certain twigs of life’s tree, over the aeons.
—Thomas Moynihan, Big Think, 20 Aug. 2025
Over eons, these increasingly dense elements burn away within the core as lighter elements incinerate across successive, encompassing layers.
—Andrew Paul, Popular Science, 20 Aug. 2025
See All Example Sentences for eon
Recent Examples of Synonyms for eon
Noun
-
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
-
There were handoffs on third-and-longs.—
Alex Zietlow,
Charlotte Observer,
29 Sep. 2025
-
No one has drains in this long.—
Lexy Perez,
HollywoodReporter,
23 Sep. 2025
Noun
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Nonetheless, Kishimori chose the United States as his first overseas trip at age 20 and then chose the United States as his first destination after joining the Japanese Foreign Service.—
Carol Cain,
Freep.com,
4 Oct. 2025
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For more animal fun, head to Santa Ynez Valley Horseback Rides, which has trail rides along the Santa Ynez River for ages eight and up, plus family fun rides for ages six and up and a pony encounter for families with younger kids.—
Beth Luberecki,
USA Today,
4 Oct. 2025
Cite this Entry
“Eon.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/eon. Accessed 7 Oct. 2025.
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