δυσγνώμων
From LSJ
κινδυνεύει μὲν γὰρ ἡμῶν οὐδέτερος οὐδὲν καλὸν κἀγαθὸν εἰδέναι, ἀλλ᾽ οὗτος μὲν οἴεταί τι εἰδέναι οὐκ εἰδώς, ἐγὼ δέ, ὥσπερ οὖν οὐκ οἶδα, οὐδὲ οἴομαι· ἔοικα γοῦν τούτου γε σμικρῷ τινι αὐτῷ τούτῳ σοφώτερος εἶναι, ὅτι ἃ μὴ οἶδα οὐδὲ οἴομαι εἰδέναι. → for neither of us appears to know anything great and good; but he fancies he knows something, although he knows nothing; whereas I, as I do not know anything, so I do not fancy I do. In this trifling particular, then, I appear to be wiser than he, because I do not fancy I know what I do not know.
English (LSJ)
gloss on δυσέκτων (sic), Suid.
Spanish (DGE)
-ον
de pers. de mala intención Heph.Astr.Epit.2.2.25.58, Physiog.2.226.3, εἰς δόξαν Ἰσραὴλ τοῦ δυσγνώμονος Chrys.Hom.Ps.36.60, Sud.s.u. δυσέκτων.