τετραπτύχους
τετράπτυχος, fourfold
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
feminine accusative plural (newmorph)
masculine accusative plural (newmorph) of
τετράπτυχος
No checked forms of τετράπτυχος in the morphology database.