κέφαλοί κέφαλος, mullet Morpho works with a static database. If you like, you can compare the output of Morpheus.Parsed as: masculine nominative plural (morph21) masculine vocative plural (morph21) of κέφαλος κέφαλος Masculine SingularDualPlural Nominative – – κέφαλοι Genitive – – – Dative – – – Accusative – – – Vocative – – –