sumarsvipur
nafnorð karlkyn
Beyging
eintalafleirtala
án greinismeð greinián greinismeð greini
nf.sumarsvipursumarsvipurinnnf.sumarsvipirsumarsvipirnir
þf.sumarsvipsumarsvipinnþf.sumarsvipisumarsvipina
þgf.sumarsvipsumarsvipnumþgf.sumarsvipumsumarsvipunum
ef.sumarsvipssumarsvipsinsef.sumarsvipasumarsvipanna