ἀναίτιος
ἔκστασίς τίς ἐστιν ἐν τῇ γενέσει τὸ παρὰ φύσιν τοῦ κατὰ φύσιν → what is contrary to nature is any developmental aberration from what is in accord with nature (Aristotle, On the Heavens 286a19)
English (LSJ)
ον, also α, ον Hdt.9.110, A.Ch.873:—in the best authors, only of persons,
A not being the fault or cause of a thing, guiltless, ἀναίτιον αἰτιάασθαι Il.13.775, cf. Od.20.135, etc.; αἰτία ἑλομένου, θεὸς ἀ. Pl.R.617e; ἀναίτιος ἀθανάτοις guiltless before the gods, Hes.Op.827, cf. E.Med.730; ἀ. παρά τινι X.Cyr.1.6.10; ἀ. αἷμα ἐκχέαι SIG1181.6. 2 c. gen. rei, guiltless of a thing, Hdt.1.129, 7.233, etc.; φόνου, κακῶν, A.Ag.1505, Ch.873; κακίας Pl.Ti.42d; ἀφροσύνης X.Cyr.1. 5.10: οὐκ ἀναίτιόν ἐστι, c. inf., it is blamable to do, ib.5.5.22. II not being the cause, τὸ ἀ. τιθέναι ὡς αἴτιον Arist.APr.65b16, cf. Rh. 1401b30; having no cause, unjustifiable, κολάσεις Phld.Ir.p.52 W. Adv. -ως not in the form of a cause, ἀ. τὴν αἰτίαν ἔχειν Plot.6.7.2; without assigning any reason, ὁλοσχερῶς καὶ ἀ. λεκτέον Simp.in Cael.665.11. III uncaused. Plot.3.1.1, Phlp. in Ph.277.1: Sup., Sch.E.Hipp.672. Adv. -ως without a cause, Gal. 10.36, S.E.P.3.67, Simp.in Ph.641.10; ἀ. γίγνεσθαι Alex.Aphr.in Metaph.309.15.