follow Dictionary.com

Is irregardless a word?

psycho

[sahy-koh] /ˈsaɪ koʊ/ Slang.
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 of psycho
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. 2015.
Cite This Source
Examples from the Web for psycho
Contemporary Examples
Historical Examples
  • Down the hall, a patient screamed suddenly in the psycho ward.

    Criminal Negligence Jesse Francis McComas
  • It was so in keeping with his features that it served to strengthen the psycho diagnosis.

    The Old Martians Roger Phillips Graham
  • Maybe he was psycho and they didn't notice; they had some godawful asses for psychiatrists in war medicine.

    The Brain Alexander Blade
  • psycho wouldn't do you any good if you weren't, that's the truth.

    Dangerous Ages Rose Macaulay
  • Hell, don't you know any language but that psycho double-talk?

    The Planet Savers Marion Zimmer Bradley
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
Cite This Source
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
Cite This Source
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.
Cite This Source
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.
Cite This Source
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.
Cite This Source

Word of the Day

Difficulty index for psycho

Some English speakers likely know this word

Word Value for psycho

16
16
Scrabble Words With Friends

Nearby words for psycho