1. (archaic) To castrate; to remove one's manhood.
2. To sap the strength, whether physical or emotional, required to deal with a situation.
from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike.
► uses
Uses:
The idea was too horrible to be borne for a moment. It unmanned him utterly, and he hid his face between his two hands and sobbed aloud like one broken-hearted.
Grant Allen. Strange Stories.
---
here he lamented outright; unmanned by a sense of his bitter injuries, and Earnshaw’s ingratitude and dangerous condition.
Emily Brontë. Wuthering Heights (1847)
---
The boatswain, unmanned for the first time, respectfully dried his eyes on the Jack,