'sissiness' definitions:

The trait of being effeminate (derogatory of a man); "the students associated science with masculinity and arts with effeminacy"; "Spartans accused Athenians of effeminateness"; "he was shocked by the softness of the atmosphere surrounding the young prince, arising from the superfluity of the femininity that guided him" [syn: effeminacy, effeminateness, sissiness, softness, womanishness, unmanliness]