ἐπιφάσκω
From LSJ
κακοὶ μάρτυρες ἀνθρώποισιν ὀφθαλμοὶ καὶ ὦτα βαρβάρους ψυχὰς ἐχόντων → eyes and ears are poor witnesses for men if their souls do not understand the language (Heraclitus Phil.: Fr. B 107; Testimonia: Fragment 16, line 6)
English (LSJ)
A pretend, profess, c. inf., εἰδέναι σαφῶς Ph.1.457 ; ἰᾶσθαι Id. ap. Eus.PE8.14 ; act a part, ἐ. τὸν [σεμνόν] Phld.Vit.p.36J.; τὸν πλούσιον Ph.2.536.