Grettishöfðinafnorð karlkyn · ÖrnefniFallbeygingarEt.eintalaFt.fleirtalaEintalaNf.nefnifallGrettishöfðiÞf.þolfallGrettishöfðaÞgf.þágufallGrettishöfðaEf.eignarfallGrettishöfða