incomprehensible

adjective

Difficult or impossible to understand or comprehend; unintelligible.

adjective

Impossible to know or fathom.

adjective

Having no limits; boundless.

noun

A thing or being that cannot be circumscribed within limits or that cannot be grasped by the intellect.

Not to be comprehended or understood; that cannot be grasped by the mind.

adjective

Not capable of being contained within limits.