indubitability

noun

in·​du·​bi·​ta·​bil·​i·​ty (ˌ)inˌd(y)übətəˈbilətē 

ən-, 

-bətə-, 

-lətē, 

-i

plural -es

: the quality or state of being unquestionable : certainty

the English empiricists tended to lean on the indubitability of the facts given

—S. C. Pepper

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