Noun

the state of being decrepit or worn out from age or long use

* 1781, Samuel Johnson, Lives of the Poets

There prevailed in his time an opinion, that the world was in its decay, and that we have had the misfortune to be produced in the decrepitude of nature.

* 1839, Charles Dickens, Nicholas Nickleby

This was the probable destination of his sister Kate. His uncle had deceived him, and might he not consign her to some miserable place where her youth and beauty would prove a far greater curse than ugliness and decrepitude ?

Noun

(uncountable) The condition quality of being frail, physically, mentally, or morally; frailness; infirmity; weakness of resolution; liability to be deceived or seduced.

* 1748 . David Hume. Enquiries concerning the human understanding and concerning the principles of moral. London: Oxford University Press, 1973. § 36, n. 1.

the limitations and restraints of civil government, and a legal constitution, may be defended, either from reason, which reflecting on the great frailty and corruption of human nature, teaches, that no man can safely be trusted with unlimited authority ;

*{{quote-news

, year=2011 , date=October 29 , author=Phil McNulty , title=Chelsea 3 - 5 Arsenal , work=BBC Sport citation , page= , passage=For all their frailty at the back, Arsenal possessed genuine menace in attack and they carved through Chelsea with ease to restore parity nine minutes before half-time. Aaron Ramsey's pass was perfection and Gervinho took the unselfish option to set up Van Persie for a tap-in.}}

A fault proceeding from weakness; foible; sin of infirmity.