psycho
[ sahy-koh ]
/ ˈsaɪ koʊ /
noun, plural psy·chos.
a psychopathic or psychotic person.
a crazy or mentally unstable person.
adjective
psychopathic or psychotic.
crazy; mentally unstable.
QUIZZES
CAN YOU GUESS THESE WORDS FROM AROUND THE US?
American English is not always as it appears to be ... get to know regional words in this quiz!
Question 1 of 10
A bet is synonymous with a wager, but what does it mean in New York?
Origin of psycho
First recorded in 1935–40; by shortening
Words nearby psycho
Definition for psycho (2 of 2)
psycho-
a combining form representing psyche (psychological) and psychological (psychoanalysis) in compound words.
Also especially before a vowel, psych-.
Origin of psycho-
<Greek, combining form of psȳchḗ breath, spirit, soul, mind; akin to psȳ́chein to blow (see psykter)
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for psycho
British Dictionary definitions for psycho (1 of 2)
psycho
/ (ˈsaɪkəʊ) /
noun, adjective plural -chos
an informal and offensive word for psychopath or psychopathicSee psychopath
British Dictionary definitions for psycho (2 of 2)
psycho-
sometimes before a vowel psych-
combining form
indicating the mind or psychological or mental processespsychology; psychogenesis; psychosomatic
Word Origin for psycho-
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
Medical definitions for psycho (1 of 2)
psycho
[ sī′kō ]
n.
A psychopath.
adj.
Crazy; insane.
Medical definitions for psycho (2 of 2)
psycho-
pref.
Mind; mental:psychogenic.
Mental activities or processes:psychomotor.
Psychology; psychological:psychosocial.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.