ὑπωπιάζω
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)
A strike one under the eye, give him a black eye:—Pass., have a black eye, ὑπωπιασμέναι Ar.Pax541, cf. Arist.Rh.1413a20, D.L.6.89. II metaph., bruise, mortify, 1 Ep.Cor.9.27; also, annoy greatly, wear out, τινα Ev.Luc.18.5, cf. Plu.2.921f (corr. Turnebus for ὑποπιέζω).