ʾāmal אָמַל ‘to weaken’ (Hebrew)

Etymology^?: a primitive root

ʾāmal v
1) to be weak, to droop, to languish, to be exhausted
 1a) (Qal) pass participle (of the heart)
  1a1) to be weak
  1a2) to droop
 1b) (Pulal)
  1b1) to be or grow feeble
  1b2) to languish