ἐπιμιγνύναι

From LSJ

μὴ πιστεύσητε τοῖς ἀμαθεστέροις ὑμῶν αὐτῶν → do not believe those who are more ignorant than you yourselves

Source

Greek > English (Woodhouse Verbs Reversed)

(see also ἐπιμίγνυμι): have intercourse with, intermix with, mingle with, mix with

Lexicon Thucydideum

commercium habere, commeare, to have commerce with, traffic, 1.2.2,
MED. idem, the same 1.146.1. 2.1.1.