חִנָּם

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

Plato, Laws, 626e

English (Strong)

from חֵן; gratis, i.e. devoid of cost, reason or advantage: without a cause (cost, wages), causeless, to cost nothing, free(-ly), innocent, for nothing (nought, in vain.