A.“ἤλλαττον” Men.Epit. 466: fut. “-άξω” Thgn.21: aor. “ἤλλαξα” E.Alc.661: pf. ἤλλα^χα (ἀπ-) X.Mem.3.13.6, (δι-) Dionys. Com.2.10:—Med., fut. “ἀλλάξομαι” Luc. Tyr.7, (ἀντ-) E.Hel.1088: aor. “ἠλλαξάμην” Id.El.103, Antipho 5.79, Th.8.82, etc.: pf. (in med. sense) ἤλλαγμαι ( ἐν-) S. Aj.208:—Pass., fut. ἀλλαχθήσομαι Trag. and Com., (ἀπ-) E.Med.878, Ar.Av.940; ἀλλαγήσομαι in early Prose, (ἀπ-) Hdt.2.120, (ἐξαπ-) Th.4.28: aor. ἠλλάχθην and ἠλλάγην, former more freq. in S. and E., latter in Prose: pf. “ἤλλαγμαι” Antiph. 176, AP9.67, al.: plpf. “ἤλλακτο” Hdt.2.26. (More common in compds., esp. in later Gk.): (ἄλλος):—make other than it is, change, alter, “τόπον” Parm.8.41; “μορφήν” Emp.137; “χροιάν” E. Med.1168; “ἤλλαττε χρώματ᾽” Men.Epit.466; “τὸ ἑαυτοῦ εἶδος εἰς πολλὰς μορφάς” Pl.R. 380d; “χώραν” Id.Prm.139a.
II. ἀ. τί τινος give in exchange, barter one thing for another, “τῆς σῆς λατρείας τὴν ἐμὴν δυσπραξίαν . . οὐκ ἂν ἀλλάξαιμ᾽ ἐγώ” A.Pr. 967; “τι ἀντί τινος” E.Alc.661:— Med., “τὴν παραντίκα ἐλπίδα . . οὐδενὸς ἂν ἠλλάξαντο” Th.8.82.
4. Med., ἔξω τρίβου ἀλλάσσεσθαι ἴχνος move one's position, Id.El.103.
III. take one thing in exchange for another, “κάκιον τοὐσθλοῦ παρεόντος” Thgn.21; πόνῳ πόνον ἀ. to exchange one suffering with another (nisi leg. πόνου), Trag.Adesp.7.3; ἠλλαττόμεσθ᾽ ἂν δάκρυα δόντες χρυσίον should take in exchange, Philem.73: ἀ. θνητὸν εἶδος assume it, E.Ba.53, cf. 1331:—more freq. in Med., τί τινος one thing for another, “εὐδαιμονίας κακοδαιμονίαν” Antipho 5.79, cf. Pl.Lg.733b; τὰ οἰκήϊα κακὰ ἀλλάξασθαι τοῖσι πλησίοισι exchange them with them, Hdt.7.152: hence, buy, “τι ἀντ᾽ ἀργυρίου” Pl.R.371c; “διά τινος ὠνῆς ἢ καὶ πράσεως ἀλλάττεσθαί τί τινι” Id.Lg. 915d, 915e; τοῦ παντὸς ἀ. prize above all things, Ph.Bel.56.30.
2. take a new position, i.e. go to a place, “ἀ.Ἅιδα θαλάμους” E.Hec.483; “πόλιν ἐκ πόλεως” Pl.Plt.289e.
IV. abs., have dealings, as buyer or seller, in Med., “πρός τινα” Pl.Lg.915e.
2. alternate, Emp.17.6; σκῆπτρ᾽ ἔειν ἐνιαυτὸν ἀλλάσσοντε to enjoy power in turn, E.Ph. 74, cf. Pl.Ti.42c:—Pass., ἀρεταὶ . . ἀλλασσόμεναι in turns, Pi.N.11.38, cf. Arist.Pr.940a15. ϝ. Pass., to be reconciled, S.Fr.997.