- feeble or weak in body or health, especially because of age; ailing.
- unsteadfast, faltering, or irresolute, as persons or the mind; vacillating: infirm of purpose.
- not firm, solid, or strong: an infirm support.
- unsound or invalid, as an argument or a property title.
- to invalidate.
Origin of infirm
SynonymsSee more synonyms for infirm on Thesaurus.com
Examples from the Web for infirm
The next evening, Romero was saying mass in the chapel at the hospice where he lived in a tiny room near the infirm and the dying.Why Pope Francis Wants to Declare Murdered Archbishop Romero a Saint
August 24, 2014
Was the infirm old soldier, perhaps, taking Obama to task for the scandals in the U.S. Department of Veterans Affairs?What the D-Day Veteran Told Obama at the 70th Anniversary Commemoration
June 6, 2014
Are we unfairly neglecting the up-and-coming in favor of the old and infirm?Do Blues Musicians Need to be Really, Really Old?
September 22, 2013
This created a good incentive for the other justices to lobby the infirm one to step down.Justice Stevens Should Quit Now
April 5, 2010
I get sick when I hear of the charities obliterated and the old and infirm investors who are left with nothing.I Made the List!
February 5, 2009
To be "infirm of purpose" is to be at the mercy of the artful or at the disposal of accident.Tales And Novels, Volume 5 (of 10)
The contemplation of the infirm and lonely steed overcame him.The Secret Agent
But the infirm are always cunning—he breathed not a suspicion.Night and Morning, Complete
Can they give beauty to the deformed, strength to the weak, or health to the infirm?Joseph Andrews, Vol. 2
The Duke of Lerma, infirm and enfeebled by years, was unable to confront his foes.Calderon The Courtier
- weak in health or body, esp from old age
- (as collective noun; preceded by the)the infirm
- lacking moral certainty; indecisive or irresolute
- not stable, sound, or securean infirm structure; an infirm claim
- law (of a law, custom, etc) lacking legal force; invalid
Word Origin and History for infirm
late 14c., "weak, unsound" (of things), from Latin infirmus "weak, frail, feeble" (figuratively "superstitious, pusillanimous, inconstant"), from in- "not, opposite of" (see in- (1)) + firmus (see firm (adj.)). Of persons, "not strong, unhealthy," first recorded c.1600. As a noun from 1711.
- Weak in body, especially from old age or disease; feeble.