| Sg. indefinite | juleaften |
| Sg. definite | juleaftenen |
| Pl. indefinite | juleaftener; juleaftner |
| Pl. definite | juleaftenerne; juleaftnerne |
| Sg. indefinite | juleaftens |
| Sg. definite | juleaftenens |
| Pl. indefinite | juleafteners; juleaftners |
| Pl. definite | juleaftenernes; juleaftnernes |