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