grassumar
nafnorð hvorugkyn
Beyging
eintalafleirtala
án greinismeð greinián greinismeð greini
nf.grassumargrassumariðnf.grassumurgrassumrin / grassumurin
þf.grassumargrassumariðþf.grassumurgrassumrin / grassumurin
þgf.grassumrigrassumrinuþgf.grassumrumgrassumrunum
ef.grassumarsgrassumarsinsef.grassumragrassumranna