Sýrfellshraunnafnorð hvorugkyn · ÖrnefniFallbeygingarEt.eintalaFt.fleirtalaEintalaNf.nefnifallSýrfellshraunÞf.þolfallSýrfellshraunÞgf.þágufallSýrfellshrauniEf.eignarfallSýrfellshrauns