geysivegur
nafnorð karlkyn
Beyging
eintalafleirtala
án greinismeð greinián greinismeð greini
nf.geysivegurgeysivegurinnnf.geysivegirgeysivegirnir
þf.geysiveggeysiveginnþf.geysivegigeysivegina
þgf.geysivegigeysiveginumþgf.geysivegumgeysivegunum
ef.geysivegargeysivegarinsef.geysivegageysiveganna