ἐπέρχομαι

Verb

 * 1) to approach
 * 2) to go against, attack, invade
 * 3) to come forward to speak
 * 4) to suddenly come upon, befall, happen to
 * 5) to come into one's head, occur to
 * 6)  to arrive
 * 7) to go over, traverse, cross
 * 8) to go through, discuss, recount

Conjugation
serves as the future tense in Attic, and supplies imperfect forms as well.