provability
— Noun
– English
~ capability of being demonstrated or logically proved
provable
— Adjective
– English
~ capable of being demonstrated or proved; "obvious lies"; "a demonstrable lack of concern for the general welfare"; "practical truth provable to all men"- Walter Bagehot
provably
— Adverb
– English
~ in an obvious and provable manner; "his documentary sources are demonstrably wrong"