psychopath - definition and synonyms

noun [countable] 

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/ˈsaɪkəʊpæθ/
singularpsychopath
pluralpsychopaths
  1. someone with a mental disorder that makes them behave in ways that can be dangerous to other people
    1. a.
      informal someone who is often angry and aggressive and does not care if they hurt other people

      I once worked with a complete psychopath called Jake.

derived word

psychopathic

 

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/ˌsaɪkəʊˈpæθɪk/
adjective