"Unconceivable" is a word in ENGLISH

Characteristic of the cosmos or universe; inconceivably great; vast; as, cosmic speed.

Not apprehensible; unintelligible; inconceivable.

Not cogitable; inconceivable.

The quality of being incomprehensible, or beyond the reach of human intellect; incomprehensibleness; inconceivability; inexplicability.

Not capable of being comprehended or understood; beyond the reach of the human intellect; inconceivable.

The quality of being inconceivable; inconceivableness.

Not conceivable; incapable of being conceived by the mind; not explicable by the human intellect, or by any known principles …

Inconceivable.

Without limit in power, capacity, knowledge, or excellence; boundless; immeasurably or inconceivably great; perfect; as, the infinite wisdom and goodness …

Unimaginable; inconceivable.

Not to be expected; inconceivable.

Incapable of being supposed; not supposable; inconceivable.

salat-úmon - (H) What is to—, can—, should—, be guessed or understood; intelligible, comprehensible. Dîsalatúmon—fathomless, incomprehensible, unintelligible, inconceivable. (cf. sátum).

Not subject to condition or limitations; infinite; absolute; hence, inconceivable; incogitable.