1. An evil supernatural being
   - devil, fiend, daemon, daimon 
2. A cruel wicked and inhuman person
   - monster, fiend, devil, ogre 
3. Someone extremely diligent or skilful
   "he worked like a demon to finish the job on time"; "she's a demon at maths"

Derived forms: demons

See also: demonic, demonize

Type of: actor, disagreeable person, doer, evil spirit, unpleasant person, worker

Encyclopedia: Demon Demon, Togo

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