First Known Use: 1942
Dictionary
psycho
noun psy·cho \ˈsī-(ˌ)kō\
: a person who is mentally ill and often dangerous or violent
plural psychos
Full Definition of PSYCHO
: a deranged or psychopathic person —not used technically
— psycho adjective
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Origin of PSYCHO
short for psychopath
Related to PSYCHO
Other Psychology Terms
Medical Dictionary
psycho
noun psy·cho \ˈsī-(ˌ)kō\
plural psychos
Medical Definition of PSYCHO
: a deranged or psychopathic individual—not used technically
—psycho adjective
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