| Nominativ | opsius, opulus, props, ops | steropes, tropes, panopes, opes, opesque, hopes |
| Genitiv | metopis, opis | aeropum, canopum, opum, opumque, oropum, optutum, propium, opium, oppium |
| Dativ | opi, opidis, opinationes, canopi, operebat, opidum, opinationis, metope, cassiope, opiionis, opiparem, operorum, opimia, opipares, chalciope, opidani, opimio, opiter, propi, ope, opulo, opidanis, opinatio, opitercivm, opulo, opidanorum, opinatione, opevirginea, calliope, opidinis, opinationem, alope, opeream | opibus, opibusque, obibus |
| Akkusativ | opem, opemque | hopes, opulos, steropes, tropes, panopes, opes, opesque |
| Ablativ | calliope, alope, opeream, operebat, metope, cassiope, operorum, chalciope, ope, opulo, opulo, opevirginea | opibus, opibusque, obibus |
| Vokativ | ops, opsius, props | steropes, tropes, panopes, opes, opesque, hopes |
