INFIRMITY Synonyms: 107 Similar and Opposite Words

infirmity

noun

in-ˈfər-mə-tē

Definition of infirmity

as in disease

an abnormal state that disrupts a plant's or animal's normal bodily functioning an 18th-century quack who specialized in those mysterious infirmities that are known only to the idle rich

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in weakness

the quality or state of lacking physical strength or vigor a period of infirmity left the athlete completely out of shape

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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 infirmity Jesus’ understanding of spiritual reality – the reality of each of us, as created and maintained by God – led to the woman’s immediate freedom from infirmity. — Alistair Budd, Christian Science Monitor, 21 Jan. 2026 Their income is limited, because of age or infirmity. — Dan Horn, Cincinnati Enquirer, 10 Nov. 2025 As if my sudden turn to sedentariness were the result of indolence, not infirmity. — Lucinda Rosenfeld, New Yorker, 25 Oct. 2025 Humor savors an infirmity — a foible, a failing, a venality, a flaw. — Big Think, 23 Sep. 2025 See All Example Sentences for infirmity

Recent Examples of Synonyms for infirmity

Noun

DeepMind’s AlphaFold, for example, has used to AI to make available new structures for more than 200 million proteins, opening new pathways for research into disease and medicine.

— Belonging Forum, Forbes.com, 22 July 2026
The lab got its start with studies of Rocky Mountain spotted fever in the 1900s, when ranchers and cattle were dying from the then-unknown disease.

— CNN Money, CNN Money, 22 July 2026

Definition of disease

Noun

Such declines can impact muscle strength, bone density, and libido, potentially causing fatigue and weakness.

— Nina Shapiro, Forbes.com, 18 July 2026
At a meeting earlier this month, the RMG Sustainability Council warned that structural weaknesses could put lives and property at risk if the building remained open.

— Jasmin Malik Chua, Footwear News, 17 July 2026

Definition of weakness

Noun

After her diagnosis, her doctor taught her about the illness and what to expect during treatment.

— Durrie Bouscaren, NPR, 25 July 2026
In the initial stages of infection, the pathogen would resemble a known illness—one vulnerable to standard vaccines or drug remedies.

— Gideon Lewis-Kraus, New Yorker, 25 July 2026

Definition of illness

Noun

Punch was abandoned by his mother after his birth a year ago Sunday, presumably because of exhaustion.

— ABC News, ABC News, 25 July 2026
Rescue teams must also reach the victim and remove them from the water quickly, particularly when exhaustion, cold or rough conditions could make survival more difficult.

— Neetika Walter, Interesting Engineering, 24 July 2026

Definition of exhaustion

Noun

As Kasubhai observed, despite its legal feebleness, Kennedy’s declaration and its explicit threat has had a concrete impact on the provision of gender-affirming services to American youths.

— Business Columnist, Los Angeles Times, 23 Apr. 2026
Signs of disease include warts on legs, crusty or swollen eyes, feebleness, a ruffled appearance, difficulty breathing, nasal discharge, and diarrhea.

— Brandee Gruener, Southern Living, 5 Mar. 2026

Definition of feebleness

Noun

Blaming billionaire wealth-hoarding for America’s ills would poll very well among the nation’s anthropology departments.

— Gilad Edelman, The Atlantic, 19 July 2026
Last month, Kwon’s team, in collaboration with Seongju Kim at Hanbat National University, in Daejeon, South Korea, presented its solution to HBM’s future ills.

— IEEE Spectrum, IEEE Spectrum, 8 July 2026

Definition of ill

Noun

And, when pets suffered from cancer or heart failure or debility, conversations about what to do next were emotional but often straightforward.

— Sunita Puri, New Yorker, 6 June 2026
His trajectory is one of softening, from the swaggering knight of the opening to the irrepressible lover of the second act to his final physical debility.

— Justin Davidson, Vulture, 11 Mar. 2026

Definition of debility

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infirmities

infirmity

infix

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“Infirmity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infirmity. Accessed 26 Jul. 2026.

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Synonyms of infirmity

noun

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