psychopath

/ˈsaɪkoʊˌpæθ/
noun
  1. A person who has a serious mental condition that causes them to behave in violent, cruel, or antisocial ways without feeling guilt or empathy for others.
    • Experts say not every violent criminal is a psychopath, but many share similar traits.
    • The movie villain was a classic psychopath who showed no remorse for his crimes.
    • She studied the behavior of psychopaths to understand how they process emotions differently.
  2. An informal term for someone who is extremely unpredictable, dangerous, or emotionally unstable.
    • Don't drive like a psychopath; we'll get there safely if you just slow down.
    • My boss is a total psychopath when it comes to deadlines—he screams at everyone.
    • He called his ex a psychopath after she keyed his car for no reason.
What does "psychopath" mean? | whatsthatwordmean | whatsthatwordmean