A.“ἐτρα_χύνθην” Pl.Ti.66c: pf. “τετράχυσμαι” Arist.HA536b23, (ἐκ-) Luc.Pisc.51; 3sg. “-υνται” Arist.Pr.901b11; inf. “-ύνθαι” Pl.Prt.333e: (τραχύς):—make rough, uneven, Id.Ti.65d: c. acc., τ. τὸ κύτος ib.67a; “αὔρη τρηχύνοι πέλαγος” A.R.4.768:— Pass., become rough, Pl.Ti.66c, Plu.Rom.3, etc.; of the sea, Arist. Col.791a21; of the voice, Id.Aud.803b2; τ. τῇ φωνῇ use rough, harsh tones, Plu.TG2.
3. metaph. in Pass., to be angry, exasperated, “τετραχύνθαι τε καὶ ἀγωνιᾶν” Pl.Prt. 333e; “πρός τινα” Plb.2.21.3, Plu.Pel.26; τινι Anon. Oxy.664.38; τ. ὅτι . . D.H.Th.43.
4. τ. τὰς ἀκοάς grate roughly on the ears, Id.Comp.22.