διετήσιος
From LSJ
Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη. Τὸ δὲ ἡττᾶσθαι αὐτὸν ὑφ' ἑαυτοῦ πάντων αἴσχιστόν τε ἅμα καὶ κάκιστον. → Τo conquer yourself is the first and best victory of all, while to be conquered by yourself is of all the most shameful as well as evil
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.
Greek (Liddell-Scott)
διετήσιος: -ον, ὁ διαρκῶν ἐπὶ ὁλόκληρον ἔτος ἢ γινόμενος δι’ ὅλου τοῦ ἔτους, Λατ. perennis, θυσίαι Θουκ. 2. 38. -Ἐπίρρ. -ίως, Α. Β. 35.