SENESCENT Synonyms: 59 Similar and Opposite Words

senescent

adjective

Definition of senescent

as in older

being of advanced years and especially past middle age symptoms most often seen in senescent people

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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 senescent Zombie cells are senescent cells, which are cells that are technically alive but in growth arrest due to a variety of stressors, including oxidative stress and DNA damage. — Celia Shatzman, Forbes.com, 18 Sep. 2025 But having too few senescent cells is dangerous, because senescence helps block tumors. — Tad Friend, New Yorker, 4 Aug. 2025 QAnon was for senescent boomers; fashwave and Embrace Masculinity clips are millennial-coded. — Kieran Press-Reynolds, Pitchfork, 30 Apr. 2025 If the cells were truly senescent, then the medications should both reduce the number of senescent cells and reverse many of the structural DNA changes and gene expression disruptions. — Megan Molteni, STAT, 9 Jan. 2022 See All Example Sentences for senescent

Recent Examples of Synonyms for senescent

Adjective

Her contribution came at a time when one in three local Meals on Wheels America providers have a wait-list, with elderly citizens having to wait an average of four months for meals and services.

— Emma Burleigh, Fortune, 9 July 2026
When Martín is kidnapped by a monster, Cleo ventures into the jungle to rescue him, aided by an elderly witch and a naughty anteater.

— Christopher Vourlias, Variety, 9 July 2026

Definition of elderly

Adjective

First was an anti-aging and beauty-focused treatment that combined 20 minutes in a relaxingly warm red light bed with a Japanese Microbiome and Fermented Enzyme Facial.

— Kathryn Romeyn, Travel + Leisure, 7 July 2026
The Osea Anti-Aging Body Balm uniquely acts as both a moisturizer and a serum, combining intense hydration with anti-aging, skin-firming benefits.

— Melony Forcier, InStyle, 2 July 2026

Definition of aging

Adjective

Meek, a 10-year-old Black girl, is grappling with her fears of nuclear Armageddon as more prosaic domestic concerns kick into high gear.

— Theater Critic, Los Angeles Times, 8 July 2026
However, that is changing as the US Department of Defense seeks more robust, less vulnerable power systems for military satellites that are less hazardous than the older spacecraft powered by uranium and plutonium.

— David Szondy July 07, New Atlas, 8 July 2026

Definition of old

Adjective

Follow in those well-heeled footsteps with wide-fit pairs in perfectly aged washes–Dior, Nili Lotan, and Chloé agree.

— Rosie Jarman, Vogue, 10 July 2026
There are several different rums in the lineup, including un-aged and barrel-aged versions, as well as a spiced rum that’s smoked over a peat fire to give it some of that classic Islay character.

— Jonah Flicker, Robb Report, 10 July 2026

Definition of aged

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senescence

senescent

senhorita

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“Senescent.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/senescent. Accessed 12 Jul. 2026.

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Synonyms of senescent

adjective

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