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