nihil obstat /ˈnɪhɪl ˈɒbstæt/ noun1 •A declaration of no objection; (specifically) a declaration used by the Catholic Church to indicate a book, initiative, or appointment to an office has been found to not breach religious or moral norms.This ingenious plan expressed in a booklet by the Italian Roman Catholic priest had received three Nihil Obstats and two Imprimaturs from his bishop. — 1943 formsnihil obstats