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ἐνσκιρρόομαι

From LSJ

Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη → The first and best victory is to conquer self.

Plato, Laws, 626e

Russian (Dvoretsky)

ἐνσκιρρόομαι: досл. затвердевать, перен. становиться застарелым (ὅταν ἐνσκιρρωθῇ τὰ νοσήματα Xen.).