Definitions

infirm

[in-furm] / ɪnˈfɜrm /

ADJECTIVE

sick, weak

Synonyms

STRONGEST

ailing anemic decrepit feeble frail ill insecure unstable

WEAK

anile debilitated delicate enfeebled failing faint faltering flimsy fragile halting irresolute laid low lame sensile shaky unsound unsubstantial vacillating wavering wobbly

Antonyms

STRONGEST

healthy sound strong

WEAK

firm hearty robust

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.

You are buying peace of mind and financial support if you become infirm.

From MarketWatch • Jun. 1, 2026

Humanoid robots could assist the elderly or infirm.

From The Wall Street Journal • Oct. 8, 2025

Staples literally got the sick and infirm to stand up.

From Salon • Jun. 17, 2025

Yurchenkove, like all the border villages, had only a few elderly or infirm civilians.

From BBC • May 28, 2024

I might have been cold, but I was not infirm.

From "The City Beautiful" by Aden Polydoros

Vocabulary lists containing infirm

Things Fall Apart

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Negatives with "in"

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Feeling Faint: Synonyms for "Weak"

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