συναπεχθάνεσθαι
συναπεχθάνομαι, to become an enemy together
Morpho works with a static database. If you like, you can compare the output of Morpheus.
Parsed as:
present middle infinitive of συναπεχθάνομαι
No checked forms of συναπεχθάνομαι in the morphology database.