sumarvinnanafnorð kvenkynFallbeygingarEt.eintalaFt.fleirtalaEintalaEintala m. greinieintala með greiniNf.nefnifallsumarvinnasumarvinnanÞf.þolfallsumarvinnusumarvinnunaÞgf.þágufallsumarvinnusumarvinnunniEf.eignarfallsumarvinnusumarvinnunnar