The Collaborative International Dictionary of English v.0.48:
Feminineness \Fem"i*nine*ness\, n. The quality of being feminine; womanliness; womanishness. [1913 Webster]WordNet (r) 3.0 (2006):
feminineness n 1: the properties characteristic of the female sex [syn: femaleness, feminineness] [ant: maleness, masculinity]