φθειρσὶν φθείρ, a louse Morpho works with a static database. If you like, you can compare the output of Morpheus.Parsed as: masculine dative plural of φθείρ φθείρ Masculine SingularDualPlural Nominative – – – Genitive – – – Dative – – – Accusative – – φθεῖρας Vocative – – –