| Nominativ | dubium, dubiatis, dubia, dubius, hauddubius, dubiumst, haudubia | dubii, mandubii, dubiatis, dubia, haudubia, dubiae |
| Genitiv | mandubii, mandubii, dubiae, dubii, dubii | dubiarum, mandubiorum, mandubiorum, dubiumst, dubiumst, dubiorum, dubiorum |
| Dativ | dubio, dubio, dubioque, dubioque, dubiae | dubis, dubiis, mandubiis, dubiisque |
| Akkusativ | dubiam, dubiamque, dubium, dubium, dubiumst, dubiumst | dubios, dubiosque, dubias, dubiatis, dubia, haudubia |
| Ablativ | dubiatis, dubia, dubio, dubio, dubioque, haudubia, dubioque | dubis, dubiis, mandubiis, dubiisque |
| Vokativ | dubium, dubiatis, dubia, dubiumst, dubie, haudubia, dubietat | dubii, mandubii, dubiatis, dubia, haudubia, dubiae |
