follow Dictionary.com

Your favorite word could be our Word of the Day!

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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for psychos

psycho

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

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.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
psychos in Medicine

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

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 psychos

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 psychos

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 psychos

17
17
Scrabble Words With Friends

Quotes with psychos

Nearby words for psychos