Synonyms for Droop (same or very similar meaning)
WordNet sense 1 (a shape that sags):
sagWordNet sense 2 (hang loosely or laxly):
lollWordNet sense 3 (droop, sink, or settle from or as if from pressure or loss of tautness):
flag, swagWordNet sense 4 (become limp):
wiltFrom the ODE community, based on WordNetadd/edit