Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | Gygaeus |
| Gen. | Gygaei |
| Dat. | Gygaeo |
| Acc. | Gygaeum |
| Abl. | Gygaeo |
| Voc. | Gygaee |
| PLURIEL |
| Nom. | Gygaei |
| Gen. | Gygaeōrum |
| Dat. | Gygaeis |
| Acc. | Gygaeos |
| Abl. | Gygaeis |
| Voc. | Gygaei |
| SINGULIER |
| Nom. | Gygaeă |
| Gen. | Gygaeae |
| Dat. | Gygaeae |
| Acc. | Gygaeam |
| Abl. | Gygaeā |
| Voc. | Gygaeă |
| PLURIEL |
| Nom. | Gygaeae |
| Gen. | Gygaeārum |
| Dat. | Gygaeis |
| Acc. | Gygaeas |
| Abl. | Gygaeis |
| Voc. | Gygaeae |
| SINGULIER |
| Nom. | Gygaeum |
| Gen. | Gygaei |
| Dat. | Gygaeo |
| Acc. | Gygaeum |
| Abl. | Gygaeo |
| Voc. | Gygaeum |
| PLURIEL |
| Nom. | Gygaea |
| Gen. | Gygaeōrum |
| Dat. | Gygaeis |
| Acc. | Gygaea |
| Abl. | Gygaeis | |