Psycho – Of the mind
(Pronounced sy-koh)
Psycho is a prefix (a word placed before and adjoining another word) which refers to the mind or mental processes. Examples of psycho being used as a prefix include psychology, psychotic, and psychoanalysis.
Psycho can also be used as an abbreviation of psychopath.
Cycle o's (psycho), that's all she did because she couldn't make up her mind which way to go at the roundabout.
Examples of psycho in a sentence
Psychology was my favourite subject at school.
American Psycho is a novel written by Bret Easton Ellis in 1991.
A violent psychopath is the central figure of the new theatre production.



