Reverse Dictionary: FLAG (droop)

VERBS
FAG to tire or flag after exertion → 1555
FAINT FAINT AWAY to lose heart or courage; to give way, to flag → 1375
FALTER of courage, hopes, resolve: to give way, to flag → 1521
JADE to become tired or worn out; to flag → 1627
PEAK to flag or fail in health and spirits → 1580
PEG OUT to lose one’s strength or energy while performing a task; to flag → 1887