unknowable

About 0.75 uses per million words.

Meaning

1. adjective Not knowable; not able to be known.
2. noun Something that cannot be known.

Similar words

unknown transcendent impossible noumenon noumena nonknowable unforeknowable unknowing unbeknown unacknowledgeable

Often followed by

and to in is god by as future reality

Word family

unknowabilities unknowability