| Nominativ | irreprehensibilis, irreprehensibile | irreprehensibilia, irreprehensibiles |
| Genitiv | irreprehensibilis | irreprehensibilium, irreprehensibilum |
| Dativ | irreprehensibili | irreprehensibilibus |
| Akkusativ | irreprehensibile, irreprehensibilem | irreprehensibiles, irreprehensibilia, irreprehensibilis |
| Ablativ | irreprehensibili, irreprehensibile | irreprehensibilibus |
| Vokativ | irreprehensibilis, irreprehensibile | irreprehensibilia, irreprehensibiles |
