The word "unmanliest" is an adjective that refers to something or someone that is not typically associated with masculinity or traditional male attributes. Some antonyms for "unmanliest" include "manly", "macho", "virile", "strong", "brave" and "courageous". These words describe characteristics such as physical strength, bravery and determination that are often associated with traditional masculinity. Other antonyms for "unmanliest" include "weak", "timid", "feminine", "effeminate", "submissive" and "cowardly". These words describe characteristics that are not commonly associated with traditional masculinity and may be perceived as inferior or undesirable.