Definition of Problematical

Adjective: problematical  ,pró-blu'ma-ti-kul

  1. Open to doubt or debate
    - debatable, problematic
     
  2. Making great mental demands; hard to comprehend, solve or believe
    "a problematical problem";
    - baffling, elusive, knotty, problematic, tough

See also:
problematic
problematically