Undermasculinization

If sexual orientation in males reflects either a biological predisposition toward behavioral undermasculinization (including diminished gynecophilia and enhanced androphilia in adulthood) or an early childhood social learning phenomenon […]

Individuals with MAIS (undervirilized male syndrome) have unambiguously male external genitalia. They usually present with gynecomastia at puberty. They may have undermasculinization that includes sparse facial and body hair […]