Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Origin: psychopath

psycho

 noun
     
Related topics: Psychology, Psychiatry
psy‧cho plural psychos [countable]
informalMP someone who is mentally ill and who may behave in a violent or strange way
—psycho adjective
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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