'Infirm' definitions:

Definition of 'infirm'

From: WordNet
adjective
Lacking bodily or muscular strength or vitality; "a feeble old woman"; "her body looked sapless" [syn: decrepit, debile, feeble, infirm, rickety, sapless, weak, weakly]
adjective
Lacking firmness of will or character or purpose; "infirm of purpose; give me the daggers" - Shakespeare

Definition of 'Infirm'

From: GCIDE
  • Infirm \In*firm"\, v. t. [L. infirmare : cf. F. infirmer.] To weaken; to enfeeble. [Obs.] --Sir W. Raleigh. [1913 Webster]

Definition of 'Infirm'

From: GCIDE
  • Infirm \In*firm"\ ([i^]n*f[~e]rm"), a. [L. infirmus: cf. F. infirme. See In- not, and Firm, a.]
  • 1. Not firm or sound; weak; feeble; as, an infirm body; an infirm constitution. [1913 Webster]
  • A poor, infirm, weak, and despised old man. --Shak. [1913 Webster]
  • 2. Weak of mind or will; irresolute; vacillating. "An infirm judgment." --Burke. [1913 Webster]
  • Infirm of purpose! --Shak. [1913 Webster]
  • 3. Not solid or stable; insecure; precarious. [1913 Webster]
  • He who fixes on false principles treads or infirm ground. --South.
  • Syn: Debilitated; sickly; feeble; decrepit; weak; enfeebled; irresolute; vacillating; imbecile. [1913 Webster]

Synonyms of 'infirm'

From: Moby Thesaurus