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