S0436300 (sĭs′ē)n.pl.sis·sies1. A person regarded as timid or cowardly.2. Offensive A boy or man regarded as effeminate.3. Informal Sister.[ Diminutive of sis.]sis′si·fied′(-fīd′) adj.sis′si·ness, sis′sy·ness n.sis′sy·ish adj.Thesaurus
sissiness
or sissyness nounThe quality of being effeminate:effeminacy, effeminateness, femininity, unmanliness, womanishness.ThesaurusSeesissy