ETERNITY Synonyms: 48 Similar and Opposite Words

eternity

noun

i-ˈtər-nə-tē

Definition of eternity

as in perpetuity

endless time the question whether the universe will end someday or continue to exist in eternity

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in immortality

unending existence after death a firm belief in the eternity of the soul

Synonyms & Similar Words

as in forever

a long or seemingly long period of time we waited in line for tickets for an eternity

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of eternity The 80-year-old singer will spend eternity wearing high heels and a comfortable cotton dress, according to TMZ. — Brian Niemietz, New York Daily News, 25 Aug. 2026 The Platonic ideal of transcendent forms that exist in eternity is another block to progress, because, strictly speaking, there is no open future and no such thing as invention. — Literary Hub, 20 Aug. 2026 After what seemed like an eternity, the does caught wind of the mock scrape that Kontras had placed 16 yards from his stand. — Jeff Murray, Outdoor Life, 20 Aug. 2026 For a family member, an obit represents an imprimatur, validation by association, a keepsake that maintains their heritage and, perhaps for a generation, prevents their own legacy from vanishing like a walnut in the batter of eternity. — Sam Roberts, Longreads, 11 Aug. 2026 See All Example Sentences for eternity

Recent Examples of Synonyms for eternity

Noun

Because the Iranians are not going to sit back and let their economy get squeezed in perpetuity.

— Kim Hjelmgaard, USA Today, 27 Aug. 2026
States that rewrote old perpetuities rules made these trusts far more practical.

— Michael Gold CFP, Forbes.com, 4 Aug. 2026

Definition of perpetuity

Noun

There is a certain ease and flow to the conversation with your forevers.

— Barbara Ellis, Denver Post, 17 May 2026
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

Definition of forever

Noun

Kelly’s version, however, becomes a philosophical infinity mirror.

— Carlos Aguilar, Los Angeles Times, 28 Aug. 2026
Yayoi Kusama, whose obsessive repetitions of dots and nets became a means of expressing infinity, leaving an indelible mark on contemporary art worldwide, died on August 14 of multiple organ failure at a hospital in Tokyo.

— Tessa Solomon for ARTnews, Robb Report, 28 Aug. 2026

Definition of infinity

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eternities

eternity

ethereal

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“Eternity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/eternity. Accessed 2 Sep. 2026.

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Synonyms of eternity

noun

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