| Nominativ | improbus, imbrobus, improba, improbabilis, improbabiles, improbum, improbabilibus, improbalitas | improbiusque, improbabilibus, improbalitas, improba, improbabilis, improbabiles, improbi, improbae, improbiter, imbrobi, improbiorem |
| Genitiv | improbiusque, improbi, improbae, improbi, improbiter, improbiter, imbrobi, imbrobi, improbiorem, improbiorem, improbiusque | improbarum, improborum, improborum |
| Dativ | improbo, improbo, improbae | improbis, improbissimo, improbissima, improbissimorum, improbissimae, improbissimos, improbissimam, improbissimum, improbissimas, improbissimus, improbissime, improbissimi, improbissimis |
| Akkusativ | improbam, improbum, improbum | imbrobos, improbabilibus, improbalitas, improbas, improba, improbos, improbabilis, improbossime, improbossus, improbabiles |
| Ablativ | improbabilibus, improbalitas, improba, improbo, improbo, improbabilis, improbabiles | improbissimis, improbis, improbissimo, improbissima, improbissimorum, improbissimae, improbissimos, improbissimam, improbissimum, improbissimus, improbissimas, improbissime, improbissimi |
| Vokativ | improba, improbabilis, improbe, improbabiles, improbum, improbabilibus, improbalitas | improbiorem, improbiusque, improbabilibus, improbalitas, improba, improbabilis, improbabiles, improbi, improbae, improbiter, imbrobi |
