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

Salmonella is an organism that can cause serious and sometimes fatal infections in young children, elderly people and those with weakened immune systems.

— Mary Lyle, Arkansas Online, 23 July 2026
One Sunday, Henrichsen assaulted an elderly couple walking along a road, knocking over an 80-year-old man and striking his wife, according to a memo compiled by the neighborhood homeowner’s association.

— Andrew Graham, Sacbee.com, 23 July 2026

Definition of elderly

Adjective

There are also markdowns on splurge-worthy gems like this best-selling slushie machine and ice cream maker, as well as this Wavytalk red light mask that checks all of the boxes for Charlize Theron’s anti-aging skincare routine.

— Clara McMahon, PEOPLE, 18 July 2026
The four-in-one anti-aging serum hydrates, brightens, tightens, and plumps skin.

— Alyssa Morin, InStyle, 12 July 2026

Definition of aging

Adjective

Unlike my original e-bike, the Huffy includes metal fenders, a metal chain guard, and a battery that can charge in or out of the bike - all for a third of the price of my old bike.

— William Roberson, Forbes.com, 22 July 2026
Tyler James Feehan shared memories of the 25-year-old who was killed on July 17 as a result of Iranian strikes on Jordan.

— Arpita Dasika, CNN Money, 22 July 2026

Definition of old

Adjective

Secondhand furniture and decor can introduce the unusual shapes, aged finishes and one-of-a-kind details that make a room feel collected rather than copied.

— Ryan Brennan, Fort Worth Star-Telegram, 24 July 2026
If the same email connects to a middle-aged man on one platform and a young woman on another, that's a red flag.

— Artem Lalaiants, Forbes.com, 23 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 26 Jul. 2026.

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Synonyms of senescent

adjective

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