περιτυμπανιζομένας
περιτυμπανίζομαι, to be maddened by drums
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
present middle participle feminine accusative plural of περιτυμπανίζομαι
No checked forms of περιτυμπανίζομαι in the morphology database.