From WordNet (r) 3.0 (2006):
droop
n 1: a shape that sags; "there was a sag in the chair seat"
[syn: sag, droop]
v 1: droop, sink, or settle from or as if from pressure or loss
of tautness [syn: sag, droop, swag, flag]
2: hang loosely or laxly; "His tongue lolled" [syn: droop,
loll]
3: become limp; "The flowers wilted" [syn: wilt, droop]