Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: demon  dee-mun
  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"
  4. (computing) a program that runs automatically or on a schedule without user interaction
    - daemon

Derived forms: demons

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

Encyclopedia: Demon