'Decayed' definitions:

Definition of 'decayed'

adjective

Damaged by decay; hence unsound and useless; "rotten floor boards"; "rotted beams"; "a decayed foundation" [syn: decayed, rotten, rotted]

From: GCIDE

Decayed \De*cayed"\, a. Fallen, as to physical or social condition; affected with decay; rotten; as, decayed vegetation or vegetables; a decayed fortune or gentleman. -- {De*cay"ed*ness}, n. [1913 Webster]

From: GCIDE

Decay \De*cay"\, v. i. [imp. & p. p. Decayed; p. pr. & vb. n. Decaying.] [OF. decaeir, dechaer, decheoir, F. d['e]choir, to decline, fall, become less; L. de- + cadere to fall. See Chance.] To pass gradually from a sound, prosperous, or perfect state, to one of imperfection, adversity, or dissolution; to waste away; to decline; to fail; to become weak, corrupt, or disintegrated; to rot; to perish; as, a tree decays; fortunes decay; hopes decay. [1913 Webster]
Ill fares the land, to hastening ills a prey, Where wealth accumulates and men decay. --Goldsmith. [1913 Webster]