droop

nouns

a shape that sags

"there was a sag in the chair seat"

droop, sag

is derived from

droop, sink, or settle from or as if from pressure or loss of tautness

droop, flag, sag, swag

hang loosely or laxly

"His tongue lolled"

droop, loll

become limp

"The flowers wilted"

droop, wilt