óhappadagur
nafnorð karlkyn
Fallbeygingar
Eintala
eintala með greini
nefnifall
óhappadagur
óhappadagurinn
þolfall
óhappadag
óhappadaginn
þágufall
óhappadegi
óhappadeginum
eignarfall
óhappadags
óhappadagsins
Fleirtala
fleirtala með greini
nefnifall
óhappadagar
óhappadagarnir
þolfall
óhappadaga
óhappadagana
þágufall
óhappadögum
óhappadögunum
eignarfall
óhappadaga
óhappadaganna