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English definition of “psycho”

psycho

noun [C] uk   /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 uk   informal us  
He suddenly went psycho and started shooting in all directions.Of unsound mindStupid and silly
(Definition of psycho from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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