beyond (any) doubt - definition and synonyms

  1. 1
    if something is beyond doubt, it is completely certain

    What is beyond doubt is that he is utterly incompetent.

  2. 2
    in a way that is completely certain

    His ability to succeed has been established beyond any doubt.

  3. 3

    put something beyond (any) doubt

    to make the result of something certain
See also main entry: doubt