| Case | Singular | Plural |
|---|---|---|
| nom | naivka, naivka |
naivkové, naivky |
| gen | naivky, naivky |
naivků, naivek |
| dat | naivkovi, naivce |
naivkům, naivkám |
| acc | naivku, naivku |
naivky, naivky |
| voc | naivko, naivko |
naivkové, naivky |
| loc | naivkovi, naivce |
naivkách, naivcích |
| instr | naivkou, naivkou |
naivkami, naivky |