infirm

Adjective

WordNet 3.0

lacking bodily or muscular strength or vitality“a feeble old woman”“her body looked sapless”Synonyms: decrepit debile feeble rickety sapless weak weakly
lacking firmness of will or character or purpose“infirm of purpose; give me the daggers — Shakespeare”

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]

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