Synonyms and related words :
accepted, acknowledged, admitted, believed, beyond question, certain, clear, conclusive, credited, definite, doubtless, explicit, incontestable, incontrovertible, indisputable, indubious, indubitable, irrefutable, obvious, past dispute, questionless, received, self-evident, sure, trusted, unchallenged, uncontested, uncontradicted, uncontroversial, uncontroverted, undeniable, undoubted, unmistakable, unquestionable, unquestioned, unsuspected