Unknowability
Full definition of unknowability
Noun
unknowability
(countable and uncountable; plural unknowabilitys)- The quality or state of being unknowable.
- 2007, June 24, Tina Brown, Couples, At the end of her book we feel we know these couples as intimately as if we were part of their circle, but the ultimate nature of each relationship is left inviolate in its unknowability.