A.forbidden, ἀπόρρητον πόλει though it was forbidden to the citizens, S.Ant.44, cf. E.Ph.1668; “τἀπόρρητα δρᾶν” Ar.Fr.622; τὰ ἀ. forbidden exports, τἀ. ἐξάγειν, ἀποπέμπειν, Id.Eq.282, Ra.362; “ἀπόρρητον μηδὲν ποιούμενοι” Pl.Lg..932c; “πράξεις ἀ.” Phld.Ir.p.54 W.
II. not to be spoken, secret, ἀ. ποιεῖσθαι make a secret of, Hdt.9.94; esp. of state secrets, Ar.Eq.648; “ἐν-τῳ ποιεῖσθαι” X.An.7.6.43; “τἀπόρρητα ποιοῦνται” Lys.12.69; “ὁ ἐπὶ τῶν ἀπορρήτων τοῦ βασιλέως” Plu.Luc.17, cf. OGI 371; ὁ τῶν ἀ. γραμματεύς, = a secretis, Procop.Pers.2.7; ἀπόρρητα ποιεύμενος πρὸς μηδένα λέγειν ὑμέας keep them secret so that you tell them not to any one, Hdt.9.45; ἐν ἀπορρήτῳ τὴν ἀλήθειαν λέγειν tell as a secret, Pl.Tht.152c; “ἐν ἀ. εἰδέναι” And.2.19; φυλάττειν ἐν ἀπορρήτοις keep as a secret, Arist.Fr.662; ἐν ἀπορρήτῳ ξυλλαμβάνειν arrest secretly, And.1.45; δι᾽ ἀπορρήτων ἐξαγγέλλειν, ἀκούειν, Lycurg.85, Pl.R.378a; “κύριον καὶ ῥητῶν καὶ ἀπορρήτων” D.1.4; “τἀπόρρητ᾽ οἶδεν” Id.21.200; ὁ ἐν ἀπορρήτοις λεγόμενος λόγος of the esoteric doctrines of the Pythagoreans, Pl.Phd.62b; “τὰ ἀ. τῆς κατὰ τὰ μυστήρια τελετῆς” SIG 873.9 (Eleusis, ii A.D.); ἐν ἀπορρήτοις in cipher, D.S.15.20: Comp. “-ότερος” Paus.2.17.4, Philostr.VA6.19.
2. of sacred things, ineffable, secret, “φλόξ” E.IT1331; “μυστήρια” Id.Rh.943; “τἀπόρρητ᾽ . . ἐκφέρειν” Ar.Ec.442, cf. Pherecr.133; “ἐνεργείας” Jul.Or.4.151b.
b. γόης καὶ ἀ. a 'man of mystery', Philostr.VA8.7.9.
3. unfit to be spoken, abominable, Lys.10.2; “ἀ. ἀδικίαι” Pl.Lg.854e; “τίς οὐκ οἶδεν . . τὰς ἀπορρήτους, ὥσπερ ἐν τραγῳδίᾳ, τὰς τούτου γονάς;” D.21.149; of foul abuse, “κακῶς τὰ ἀπόρρητα λέγειν ἀλλήλους” Id.18.123, etc.; in Att. Law of words (e.g. ῥίψασπις) whose use was punishable, Isoc.20.3.
III. Adv. “ἀπορρήτως” ineffably, inexpressibly, Philostr.VS 2.18; conertly, “ἀπορρήτως τὰ γραφόμενα κατεχλεύαζε διὰ τῆς εἰκόνος” Eun.Hist.p.263 D.