adulthood - the state (and responsibilities) of a person who has attained maturity

trait - a distinguishing feature of your personal nature

womanlike, womanliness - the trait of being womanly; having the characteristics of an adult female

ladylikeness - behavior befitting a lady

maidenliness - behavior befitting a young maiden

girlishness - being characteristic of a girl

effeminacy, effeminateness, sissiness, unmanliness, womanishness - the trait of being effeminate (derogatory of a man)