WordReference Random House Unabridged Dictionary of American English © 2025
un•know•a•ble
(un nō′ə bəl),USA pronunciation adj.
n.
- not knowable;
incapable of being known or understood.
n.
- something that is unknowable.
- Philosophy the Unknowable, the postulated reality lying behind all phenomena but not cognizable by any of the processes by which the mind cognizes phenomenal objects.
- 1325–75; Middle English; see un-1, knowable
'unknowable' also found in these entries (note: many are not synonyms or translations):