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, but all policies have risks.

From MarketWatch • Jun. 1, 2026

And the death of his elderly, infirm father, King Salman, could soon bring succession issues to the fore.

From The Wall Street Journal • Feb. 10, 2026

Bardot had dealt with infirm health in recent years, including hospitalization for a breathing issue in July 2023 and additional hospital stays in 2025.

From Los Angeles Times • Dec. 28, 2025

Staples literally got the sick and infirm to stand up.

From Salon • Jun. 17, 2025

Negotiating the puzzling, infirm terrain demanded unceasing concentration, an all-but-impossible feat in my punch-drunk state.

From "Into Thin Air" by Jon Krakauer

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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