The Hittite word ne-ga-an
Word ne-ga-an
IPA neka-
Meaning sister
See also Hittite: ne-ek-na ‘brother’
Proto-Anatolian: *ne(ǵ)o- ‘sibling, sister, brother’

Other words that might be of interest
ḫa-aš-ša-aš ‘descendant’, ḫu-uḫ-ḫa-aš ‘grandfather’, kuu̯an- ‘woman’, pe-eš-ne ‘man, male, person’, an-tu-ua-aḫ-ḫa-aš ‘man, human being, person’, an-na-aš ‘mother’, at-ta-aš ‘father’