The quality of never making an error.

Roget 474: certainty; necessity etc. 601; certitude, surety, assurance; dead certainty, moral certainty; infallibleness etc. adj.; infallibility, reliability; indubitableness, inevitableness, unquestionableness^†.    gospel, scripture, church, pope, court of final appeal; res judicata [Lat.], ultimatum positiveness; dogmatism, dogmatist, dogmatizer; doctrinaire, bigot, opinionist^†, Sir Oracle; ipse dixit [Lat.].    fact; positive fact, matter of fact; fait accompli [Fr.].    ... show more

Dutch: onfeilbaarheid
Polish: nieomylność