Hebrew

ḥädär - dark room (HALOT 293)

PWS
*ḥadr-/*ḫadr- - inner room, living quarters (Kogan 2015: 82)
*ḫ in Arabic, ESA, EthS and MSA vs. *ḥ in Ugaritic and Ebla. Perhaps also Soq. ḥdr ‘s’arrêter’ (LS 165), attested in Müller 1905:287 (ḥedaíroh ‘sie ließ sich nieder’)