κλεψία
From LSJ
Ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι → I seem, then, in just this little thing to be wiser than this man at any rate, that what I do not know I do not think I know either
Greek (Liddell-Scott)
κλεψία: ἡ, ὡς καὶ νῦν, «κλεψιὰ», Γλωσσ. εἰς Νικ. Χρον. 390C, 395Β.