1 no aclarado, mal definido, inexplicable ὁ φόβος ... ἀ. Diog.Oen.36.2.4, 10, ἐπὶ σκιαῖς ... καὶ ἀτρανώτοις φαντασίαις Isid.Pel.Ep.M.78.1328A, ἔννοια ... ἀ. Leont.H.Nest.M.86.1296B.

2 adv. -ως sin explicación τὰ ἀ. ἐλθόντα ... ἀπὸ τῶν ἐν τῷ Ἐνώχ γεγραμμένων Origenes Cels.5.54, cf. Comm.in Mt.17.27.