ἀνυπέρεκτος
From LSJ
ἐγώ εἰμι τὸ φῶς τοῦ κόσμου· ὁ ἀκολουθῶν μοι οὐ μὴ περιπατήσῃ ἐν τῇ σκοτίᾳ ἀλλ' ἕξει τὸ φῶς τῆς ζωῆς → I am the light of the world; he that followeth me shall not walk in darkness but shall have the light of life (John 8:12)
English (LSJ)
ον, A unsurpassable, ἀκρότης Phld.D.3.5.
Spanish (DGE)
-ον insuperable, ἀκρότης Phld.D.3.5.27.