PSYCHO
psychotic, psychotic person, psycho
(noun) a person afflicted with psychosis
Source: WordNet® 3.1
Etymology
Adjective
psycho (comparative more psycho, superlative most psycho)
(colloquial or pejorative) Psychotic, or otherwise insane.
Noun
psycho (plural psychos)
(pejorative, slang) A person who is psychotic or otherwise insane.
(pejorative, slang) A person who acts in a bizarre or dangerous manner.
(informal) A class, at a college or university, in which psychology is taught.
Synonyms
• (pejorative for a pyschotic or otherwise insane person): freak, loony, nutcase, wacko
• (pejorative for a person acting in a bizarre or dangerous manner): creep, freak, loose cannon, weirdo
Source: Wiktionary
Psy"cho-.
Definition: A combining form from Gr. the soul, the mind, the
understanding; as, psychology.
Source: Webster’s Unabridged Dictionary 1913 Edition