نضب naḍaba u (نضوب nuḍūb) to seep away in the ground, be absorbed by the ground; to dry up, run dry, peter out; to be exhausted, be depleted, become less, diminish, decrease; to dwindle, decline; to die │ لا ينضب inexhaustible, incessant IV to exhaust, drain, deplete, dry up (هـ s.th.)