infallibleness means the quality of being infallible. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From infallible + -ness.
noun
- The quality of being infallible.“Our schoolmen make distinction of a certainty, evident and inevident. […] Inevident, which arises not so much out of the intrinsical truth of the proposition itself, as out of the veracity and infallibleness of the party that affirms it.”