The antonyms for the word "unmanly" are words like manly, courageous, heroic, valiant, brave, virile, and gallant. Unmanly refers to a lack of courage, bravery, or strength, and the opposite of that is to be brave and strong. Being manly also means exhibiting qualities of being responsible, dependable and standing up for what is right. This is an admirable trait that shows leadership and strength of character. Being heroic and valiant represent the pinnacle of bravery and is widely respected by both men and women. These words are uplifting and empowering and are positive words that encourage good behavior and courage.