SENESCENCE Synonyms: 25 Similar and Opposite Words

senescence

noun

Definition of senescence

as in senility

technical + formal the state of being old or the process of becoming old premature senescence

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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 senescence The Aquarium announced Ghost’s senescence online in September. — Los Angeles Times, 26 Mar. 2026 Ghost had laid eggs and entered the final stage of her life cycle, called senescence, back in September and died a natural death on Tuesday, aquarium staff said. — Julie Sharp, CBS News, 25 Mar. 2026 Sinclair’s work on senescence intersects with new therapeutic directions in oncology, from CAR-T failures linked to T-cell exhaustion to the growing interest in senolytic adjuvants. — Gilberto Lopes, STAT, 12 Feb. 2026 Or, the first generation simply declined from senescence and the debilitating effects of power long exercised without check. — Eliot A. Cohen, The Atlantic, 4 Jan. 2026 See All Example Sentences for senescence

Recent Examples of Synonyms for senescence

Noun

Her cause of death was chronic nephritis with senility, according to The Herald News.

— Lynsey Eidell, PEOPLE, 20 Sep. 2026
Then the interview happens, and Thomas is swinging between lucidity and senility, and a million things about their relationship come up, and the fiction records the interview the phone couldn’t capture.

— Andrew Marantz, New Yorker, 5 Apr. 2026

Definition of senility

Noun

As the industrial age took hold, geometry continued to show force in the colonial infantries abroad and through isomorphic police squadrons that fit neatly into modernizing city blocks patrolled back home.

— Sophie Landres, Artforum, 1 Oct. 2026
Across all age groups, alcohol use declined by nearly 2%, and heavy drinking declined by more than 8% from 2022 to 2024.

— Melissa Rudy, FOXNews.com, 30 Sep. 2026

Definition of age

Noun

Aries March 21 – April 19 Partnership asks for a little more maturity today.

— Tarot.com, Baltimore Sun, 4 Oct. 2026
After all, the oysters on the coast of the Discovery Islands that are featured in the film take years to reach maturity, but all around them, the pace of environmental change is accelerating.

— Georg Szalai, HollywoodReporter, 2 Oct. 2026

Definition of maturity

Browse Nearby Words

senectitude

senescence

senescent

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“Senescence.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/senescence. Accessed 6 Oct. 2026.

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Synonyms of senescence

noun

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