monster [-'s] n

OFr mostre 'disfigured person, misshapen being'.

  1. Person, being, or inanimate object extremely wicked, cruel, or inhumane by nature to other things or people, sometimes to the point of utter destruction; person of savage and relentless appearance.
  2. Evil force or power causing trepidation or fear.
  3. [Fig.] huge burden; mountain one must overcome to progress.