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psycho

[sahy-koh] /ˈsaɪ koʊ/
noun, plural psychos.
1.
a psychopathic or psychotic person.
2.
a crazy or mentally unstable person.
adjective
3.
psychopathic or psychotic.
4.
crazy; mentally unstable.
Origin
1935-1940
1935-40; by shortening

psycho-

1.
a combining form representing psyche, (psychological) and psychological, (psychoanalysis) in compound words.
Also, especially before a vowel, psych-.
Origin
< Greek, combining form of psȳchḗ breath, spirit, soul, mind; akin to psȳ́chein to blow (see psykter)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for psycho
  • They'd rather have a rich neighbour than a crazy wacked out psycho next door too.
  • Nerds get what they want when they want it, and they go psycho if it's not immediately available.
  • Students and professors who experienced traumatic events raise the need for university psycho-social services.
  • Growing up in a society that reveres bad-boys with big guns makes you a psycho.
  • Thus the yogi will distinctly come to realize the simultaneous occurrence in pair of these psycho-physical phenomena.
  • There can be psycho-sociological and neurological explanations.
  • We no longer fear a single enemy bent on our psycho-political subjugation.
  • You'll have to ask someone who engages in this psycho stuff to talk about their emotions.
  • Not to put too fine a point on it, but he sounded psycho.
  • The rest was more of what you'd expect from the audition round: psycho rejects, bad-dancing wannabes and oblivious warblers.
British Dictionary definitions for psycho

psycho

/ˈsaɪkəʊ/
noun, adjective (pl) -chos
1.
an informal and offensive word for psychopath or psychopathic See psychopath

psycho-

combining form
1.
indicating the mind or psychological or mental processes: psychology, psychogenesis, psychosomatic
Word Origin
from Greek psukhē spirit, breath
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for psycho
adj.

1927, shortening of psychological; 1936 (Raymond Chandler) as shortening of psychopathic (adj.).

n.

1925, short for psychologist; as short for psychopath from 1942.

psycho-

word-forming element meaning "mind, mental; spirit, unconscious," from Greek psykho-, combining form of psykhe (see psyche). It also was used to form compounds in Greek, e.g. psychopates "soul-beguiling."

Online Etymology Dictionary, © 2010 Douglas Harper
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psycho in Medicine

psycho psy·cho (sī'kō)
n.
A psychopath. adj.
Crazy; insane.

psycho- or psych-
pref.

  1. Mind; mental: psychogenic.

  2. Mental activities or processes: psychomotor.

  3. Psychology; psychological: psychosocial.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for psycho

psycho

adjective

: a special psycho channel that I know nothing about

noun

A crazy person; maniac; psychopath; nut: no buzzing broad, no nympho, no psycho, no bitch (1942+)

[probably fr psychotic; the form psychot, ''psychopath,'' is found by the 1940s]


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Related Abbreviations for psycho

psycho

psychopath
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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