περκνός περκνός, dark coloured Morpho works with a static database. If you like, you can compare the output of Morpheus.No parse information found. Search for this form in Logeion: of περκνός περκνός Singular MasculineNeuter Nominative – περκνὸν Genitive – – Dative – – Accusative περκνὸν – Vocative – –