διετήσιος
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 lasting through the year, θυσίαι Th.2.38, cf. Inscr.Prien.112.69 (i B. C.). Adv. -ίως Ar.Fr.766.