emphasis You use unquestioned to emphasize that something is so obvious, real, or great that nobody can doubt it or disagree with it. His commitment has been unquestioned The play was an immediate and unquestioned success in London. = unequivocal
emphasis If you describe someone's belief or attitude as unquestioned, you are emphasizing that they accept something without any doubt or disagreement. Royalty is regarded with unquestioned reverence. = unquestioning. something that is unquestioned is accepted or believed by everyone
If something or someone is unquestioned, they are accepted by everyone, without anyone doubting or disagreeing. Stalin was the unquestioned ruler of the Soviet Union from the late 1920s until his death in 1953. = undisputed