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English definition of “psycho”

psycho

noun [C]     /ˈsaɪ.kəʊ/ US  /-koʊ/ (plural psychos) informal
someone who is crazy and frightening: The man's a psycho.Unpleasant people in generalUnpleasant men psycho     adjective informal He suddenly went psycho and started shooting in all directions.Of unsound mindStupid and silly
(Definition of psycho noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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