put smb. (or smth.) out of court

   cчитaть кoгo-л. (или чтo-л.) нe зacлуживaющим внимaния; нe кoтиpoвaтьcя; oтбpocить кaк нecocтoятeльный (нaпp., apгумeнт) [этим. юp. лишить иcтцa пpaвa нa иcк]

    Sir Edgar wrote a few weeks ago to say that you'd had a sprained ankle throughout the proceedings, so that put you out of court (A. Wilson). The argument of analogy is put out of court (J. S. MUD. It don't [-doesn't] do to put the notion out of court merely because Sugg inclines to it (D. L. Sayers)