συμβεβάναι

From LSJ

πολλάκις δοκεῖ τὸ φυλάξαι τἀγαθὰ τοῦ κτήσασθαι χαλεπώτερον εἶναι → it often proves harder to keep than to win prosperity | it is often harder for men to keep the good they have, than it was to obtain it

Source

French (Bailly abrégé)

inf. pf. ion. de συμβαίνω.

Greek Monotonic

συμβεβάναι: [ᾰ], αντί -βεβηκέναι, απαρ. παρακ. του συμβαίνω.

Russian (Dvoretsky)

συμβεβάναι: inf. pf. к συμβαίνω.