πύῳ πύον, pus Morpho works with a static database. If you like, you can compare the output of Morpheus.Parsed as: neuter dative singular of πύον πύον Neuter SingularDualPlural Nominative – – – Genitive πύου – – Dative – – – Accusative πῦον, πῦόν – – Vocative – – –