unmanning adjective 1noun 1forms 3 adjective1 •That destroys manly virtues or qualities; that renders effeminate or helpless.Blanford did not see quite how; but her sweet enthusiasm was so warming, and the tang of her kiss so unmanning that he found himself nodding agreement. — 1978 noun1 •The removal of manly qualities. formsunmannings · more unmanning · most unmanning