1. To deprive of the distinctive qualities of a human being, as reason, or the like.
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. (Byron)
4. To deprive of men; as, to unman a ship.
Origin: 1st pref. Un- – man.