κύκνειον κύκνειος, of a swan Morpho works with a static database. If you like, you can compare the output of Morpheus.Parsed as: masculine accusative singular neuter nominative singular neuter vocative singular ✓ neuter accusative singular of κύκνειος κύκνειος Singular Neuter Nominative – Genitive – Dative – Accusative κύκνειον Vocative –