Definition of infirmnext

Synonym Chooser

How does the adjective infirm contrast with its synonyms?

Some common synonyms of infirm are decrepit, feeble, fragile, frail, and weak. While all these words mean "not strong enough to endure strain, pressure, or strenuous effort," infirm suggests instability, unsoundness, and insecurity due to old age or crippling illness.

infirm residents requiring constant care

When would decrepit be a good substitute for infirm?

While the synonyms decrepit and infirm are close in meaning, decrepit implies being worn-out or broken-down from long use or old age.

the dowager's decrepit retainers

In what contexts can feeble take the place of infirm?

Although the words feeble and infirm have much in common, feeble suggests extreme weakness inviting pity or contempt.

a feeble attempt to walk

When could fragile be used to replace infirm?

The synonyms fragile and infirm are sometimes interchangeable, but fragile suggests frailty and brittleness unable to resist rough usage.

a reclusive poet too fragile for the rigors of this world

When is it sensible to use frail instead of infirm?

The words frail and infirm are synonyms, but do differ in nuance. Specifically, frail implies delicacy and slightness of constitution or structure.

a frail teenager unable to enjoy sports

When can weak be used instead of infirm?

The meanings of weak and infirm largely overlap; however, weak applies to deficiency or inferiority in strength or power of any sort.

felt weak after the surgery

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 infirm The victim of the offense was a person with a disability and the defendant knew or should have known that the victim was a person with a disability or mentally or physically infirm. IndyStar, 6 Oct. 2025 Many of those deaths are of infirm inmates who were transferred to the state’s prison hospital in Raleigh for care and died there, records show. Charlotte Observer, 4 Aug. 2025 The public and police are encouraged to check on the elderly and infirm. Cory Franklin, Chicago Tribune, 13 July 2025 For the elderly or infirm, these displays could show electrocardiogram waveforms, collecting the data from wireless electrodes placed elsewhere on the body. IEEE Spectrum, 27 May 2021 See All Example Sentences for infirm
Recent Examples of Synonyms for infirm
Adjective
  • Free agency is weak, so the best bet will be the trade market.
    Michael Russo, New York Times, 15 May 2026
  • The original vision of the Accords – of a rapidly expanding regional bloc openly aligned with Israel and integrated economically across the Middle East – has become a significantly weaker prospect.
    Chas Newkey-Burden, TheWeek, 15 May 2026
Adjective
  • As Simpson declines, the actress appears frail, diminished, stripped of poise and makeup.
    Scott Roxborough, HollywoodReporter, 16 May 2026
  • Exceptions will be made for people who are too medically frail to work or in addiction treatment programs, among others.
    Geoff Mulvihill, Los Angeles Times, 29 Apr. 2026
Adjective
  • While most healthy people can recover in four to seven days without treatment, some vulnerable groups, like children under 5, adults 65 and older, and those with weakened immune systems, may experience more severe illness that requires medical treatment or hospitalization.
    Mary Walrath-Holdridge, USA Today, 12 May 2026
  • The illness primarily affects older adults, people with weakened immune systems and pregnant women and their newborns, but can in some cases affect people outside of these groups, per FSIS.
    Chiara Kim, PEOPLE, 11 May 2026
Adjective
  • So, in retrospect, [the entire Lightning project] looked pretty feeble.
    Jamie Lincoln Kitman, Rolling Stone, 24 Apr. 2026
  • His visit also comes as the committee stalls on advancing Casey Means, Kennedy’s nominee for surgeon general, over her lack of medical practice experience and feeble answers on the importance of vaccination.
    Daniel Payne, STAT, 22 Apr. 2026
Adjective
  • The Oscar Mike Foundation is dedicated to helping disabled veterans live a more fulfilling life.
    Steve Sadin, Chicago Tribune, 13 May 2026
  • The legislation would apply only to veterans who became disabled as a result of their military service.
    Los Angeles Times, Los Angeles Times, 13 May 2026

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Cite this Entry

“Infirm.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infirm. Accessed 20 May. 2026.

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