1.To deprive of the distinctive qualities of a human being, as reason, or the like. (R.)
2.To emasculate; to deprive of virility.
3.To deprive of the courage and fortitude of a man; to break or subdue the manly spirit in; to cause to despond; to dishearten; to make womanish. "Let's not unman each other."
4.To deprive of men; as, to unman a ship.