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psycho

Pronunciation: /ˈsaɪ̯.kəʊ̯/

The English word “psycho” has 4 meanings listed here.

adjective

  1. Psychotic, psychopathic, or (broadly) otherwise insane.

noun

  1. A person who is psychotic, psychopathic, or (broadly) otherwise insane.
  2. A person who acts in a bizarre or dangerous manner.
  3. A class, at a college or university, in which psychology is taught.

Etymology

Clipping of psychotic or psychopath + -o (“person with characteristic”). Compare sicko.

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.