ἄλογος
"without λόγος", i. e.,
I. without speech, speechless, infans, Plat.:—adv. ἀλόγως, Soph.
2. "unutterable", Lat. infandus, Plat.
II. "without reason, irrational", id=Plat., etc.: τὰ ἄλογα "brutes, animals", id=Plat., Xen.; (in modern Greek ἄλογον is "a horse").
III. "not reckoned upon, unexpected", Thuc.