mas ‧ cu ‧ lin ‧ i ‧ ty /ˌmæskjəˈlɪnəti, ˌmæskjʊˈlɪnəti/ BrE AmE noun [uncountable]
the features and qualities considered to be typical of men OPP femininity :
Children’s ideas of masculinity tend to come from their fathers.
boys trying to prove their masculinity