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Definition of infirmity

infirmity

/ɪnˈfɜːr.mə.ti/
in · fir · mi · ty
Adverb:infirmly
•
Plural:infirmities
•
Adjective:infirm
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infirmity Lexical Profile

infirmity Game Scores & Validity

• noun

1

Physical or mental weakness, feebleness, or frailty, especially as a result of advanced age or prolonged illness.

Example

"Despite the growing infirmity of his later years, the retired professor continued to write and publish essays."

2

A moral failing, defect of character, or legal flaw that diminishes validity or resolve.

Example

"The appellate court overturned the lower ruling after identifying a constitutional infirmity in the statute."

Synonyms
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Antonyms
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• Nearby Words

infinity
infirm
infirmary
infirmity
infirmly
inflame
inflamed

Word Origin & Etymology

Borrowed in the late 14th century from Old French 'infirmité', from Latin 'infirmitas' ('weakness, feebleness'), derived from 'infirmus' ('not strong or stable').

Cite this Entry

Wordmom. (2026). Definition of Infirmity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/infirmity
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