| 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 | dubiae, dubio, dubio, dubioque, dubioque | dubiis, dubis, dubiisque, mandubiis |
| Akkusativ | dubiam, dubiamque, dubium, dubium, dubiumst, dubiumst | haudubia, dubios, dubiosque, dubias, dubiatis, dubia |
| Ablativ | dubioque, haudubia, dubioque, dubiatis, dubio, dubia, dubio | dubiis, dubis, dubiisque, mandubiis |
| Vokativ | dubietat, dubium, dubiatis, dubia, dubiumst, dubie, haudubia | haudubia, dubiae, dubii, mandubii, dubiatis, dubia |
