arreton

We are beyond any visualization and vision, conception, possibility of representation and so forth, whether of order or of chaos, except insofar as the latter is used to designate the irreducibly inaccessible and thus, as I said, is in accordance with the Greek alogon (outside logos) and arreton (incomprehensible).

Chaosmic Orders: Nonclassical Physics, Allegory, and the Epistemology of Blake's Minute Particulars. 2001

Disorder ultimately underlies order, although "disorder," in this case, is closer to the Greek arreton or alogon, as that which is incomprehensible or is incommensurable with understanding, rather than (only) relating to a (say, spatial) chaotic configuration.

Chaosmic Orders: Nonclassical Physics, Allegory, and the Epistemology of Blake's Minute Particulars. 2001

In quantum mechanics "chaos" (again, in the sense of arreton, the incomprehensible) is ineliminable, even in principle: there is no "god" which could, at least in principle, create, reform it (in either sense) into cosmos.

Chaosmic Orders: Nonclassical Physics, Allegory, and the Epistemology of Blake's Minute Particulars. 2001

As to the Fathers, we only need draw attention to the following expressions: onoma arreton, aphraston, alekton, aphthegkton, anekphoneton, aporreton kai hrethenai me dynamenon, mystikon.

The Catholic Encyclopedia, Volume 8: Infamy-Lapparent 1840-1916 1913