κατεστύγναζον
καταστυγνάζω, to be of sad countenance
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
imperfect active indicative 1st singular
imperfect active indicative 3rd plural of
καταστυγνάζω
No checked forms of καταστυγνάζω in the morphology database.