Definition of "innominable"

Your fathers toforne you have cleped such lusty lyvenges after the flessh, “passions of desyre,” which are innominable tofore God and man both.

c. 1384, Thomas Usk, The Testament of Love

It is the measure of things, and their time (that is, their measure, as to space and time), and yet it is above, and prior to, time: it is full in needy things, and overflows in full things; it is unutterable, innominable: it is above understanding […]

1861, Isaak August Dorner, Patrick Fairbairn, History of the development of the doctrine of the person of Christ