Neðri-Austurheiðarfossnafnorð karlkyn · ÖrnefniFallbeygingarEt.eintalaFt.fleirtalaEintalaNf.nefnifallNeðri-AusturheiðarfossÞf.þolfallNeðri-AusturheiðarfossÞgf.þágufallNeðri-AusturheiðarfossiEf.eignarfallNeðri-Austurheiðarfoss