athafnadagur
nafnorð karlkyn
Beyging
eintalafleirtala
án greinismeð greinián greinismeð greini
nf.athafnadagurathafnadagurinnnf.athafnadagarathafnadagarnir
þf.athafnadagathafnadaginnþf.athafnadagaathafnadagana
þgf.athafnadegiathafnadeginumþgf.athafnadögumathafnadögunum
ef.athafnadagsathafnadagsinsef.athafnadagaathafnadaganna