senesco

Etymology
From.

Verb

 * 1) to become aged, grow old, age
 * 2)  to decay or diminish in strength, grow weak, weaken; waste away, wane, decline, dwindle
 * 3)  to  grow old or gray in an occupation (i. e. linger too long.)
 * 4) to waste away, fall off, wane, decline
 * 1)  to  grow old or gray in an occupation (i. e. linger too long.)
 * 2) to waste away, fall off, wane, decline