Noah Webster
Droop
DROOP, verb intransitive [Latin , from the root of drop.]
1. To sink or hang down; to lean downwards, as a body that is weak or languishing. Plants droop for want of moisture; the human body droops in old age or infirmity.
2. To languish from grief or other cause.
3. To fail or sink; to decline; as, the courage or the spirits droop
4. To faint; to grow weak; to be dispirited; as, the soldiers droop from fatigue.