ἄθυρος
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, (θύρα)
A withoutdoor, βούστασις IG11(2).287 A161 (Delos, iii B. C.); οἶκος ib.22.1322 (iii/ii B. C.); νεώς Menodot.1; οἰκίαλ Nic. Dam.p.148 D., cf. Plu.2.503c, Hdn.8.1.5, etc. II metaph., open, unchecked, Adam.2.60; ῥῆτραι Nic.Al.132; γλῶττα Ph.1.678.