ἀπόνητος
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
English (LSJ)
ον,
A without toil or trouble. Adv., Sup. ἀπονητότατα with least toil or trouble, Hdt.2.14, 7.234. 2 without suffering, S.El. 1065 (lyr.).