不ふ謬びゅう性せいMeanings1nounpapal infallibilityA technical term in Catholic theology referring to the dogma that the Pope is preserved from error when speaking ex cathedra on matters of faith and morals.不ふ謬びゅう性せいはカトリック教きょう会かいの教きょう義ぎの一ひとつです。Papal infallibility is one of the doctrines of the Catholic Church.