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.
To cause to decay; to impair.
Gradual failure of health, strength, soundness, prosperity, or of any species of excellence or perfection; tendency toward dissolution or extinction; corruption; rottenness; decline; deterioration; as, the decay of the body; the decay of virtue; the decay of the Roman empire; a castle in decay.
Harmony makes small things grow, lack of it makes great things decay. Sallust
Tradition becomes our security, and when the mind is secure it is in decay. Jiddu Krishnamurti
Writers may be disreputable, incorrigible, early to decay or late to bloom but they dare to go it alone. John Updike
I am against nature. I don't dig nature at all. I think nature is very unnatural. I think the truly natural things are dreams, which nature can't touch with decay. Bob Dylan
In a decaying society, art, if it is truthful, must also reflect decay. And unless it wants to break faith with its social function, art must show the world as changeable. And help to change it. Ernst Fischer