senescent

[si-nes-uhnt] / sɪˈnɛs ənt /

ADJECTIVE

aged

Synonyms

STRONGEST

elderly

STRONG

ancient antediluvian antiquated antique gray oldie shot worn

WEAK

age-old been around creaky getting on moth-eaten over the hill passé rusty senior citizen timeworn venerable worse for wear

Antonyms

STRONG

fresh modern new recent up-to-date young

WEAK

unripe youthful

ADJECTIVE

long in the tooth

Synonyms

WEAK

aging getting on getting up in years gray-haired white-haired

ADJECTIVE

obsolescent

Synonyms

WEAK

growing old out-of-date out-of-fashion

ADJECTIVE

senile

Synonyms

WEAK

aged ancient anile decrepit doddering doting enfeebled feeble imbecile in second childhood infirm old shattered sick weak

Antonyms

WEAK

alert well young

NOUN

aging

Synonyms

STRONG

crumbling declining developing fading fermenting maturing mellowing slumping stale waning

WEAK

getting along getting on wearing out

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In earlier studies, Amor Vegas and her team engineered immune cells known as anti-uPAR CAR T cells that selectively remove senescent cells in mice, leading to major improvements in the animals' metabolism.

From Science Daily • Jan. 3, 2026

"Our hope is that senotherapy, which involves using medications to remove senescent, or aging cells, could potentially minimize the need for surgery and/or improve outcomes after surgery."

From Science Daily • Dec. 25, 2025

Researchers at Mayo Clinic, writing in the journal Aging Cell, describe a new method for labeling senescent cells.

From Science Daily • Dec. 14, 2025

More work will be needed to find aptamers that can reliably detect senescent cells in human tissue.

From Science Daily • Dec. 14, 2025

In one thin arm, threaded with veins in a kind of senescent bas-relief, was a basket.

From "The Great Santini" by Pat Conroy

senescent

Example Sentences

Related Words