intervene
From LSJ
English > Greek (Woodhouse)
v. intrans.
Lie between: P. and V. ἐν μέσῳ εἶναι, μεταξὺ εἶναι. Before some disaster intervene and overwhelm us: P. πρίν τι ἀνήκεστον διὰ μέσου γενόμενον ἡμᾶς καταλαβεῖν (Thuc. 4, 20). Elapse (of time): P. διαγίγνεσθαι, ἐγγίγνεσθαι. Arbitrate: P. βραβεύειν, διαιτᾶν. Oppose: P. and V. ἀνθίστασθαι; see oppose. Oppose in words: P. and V. ἀντιλέγειν. Be an obstacle: P. and V. ἐμποδὼν εἶναι, ἐμποδὼν γίγνεσθαι; see prevent.