Decrepit
Pronunciation : De*crep"it
Part of Speech : a.
Etymology : [L. decrepitus, perhaps orig., noised out, noiseless, applied to old people, who creep about quietly; de- + crepare to make a noise, rattle: cf. F. d?cr?pit. See Crepitate.]
Definition : Defn: Broken down with age; wasted and enfeebled by the infirmities of old age; feeble; worn out. "Beggary or decrepit age." Milton. Already decrepit with premature old age. Motley.
Note: Sometimes incorrectly written decrepid.
Source : Webster's Unabridged Dictionary, 1913