Definition of psycho in English:

psycho

Line breaks: psy¦cho
Pronunciation: /ˈsʌɪkəʊ
 
/
informal

noun (plural psychos)

  • A psychopath.
    More example sentences
    • The speech was basically: men are psychos, Americans are psychos, the Americans want to exterminate the planet, and naked protest will end the nuclear age.
    • I don't want to be put in there with a bunch of crazy psychos… I'm not a bad person.
    • Second, my best friend and crush is being stalked by crazy, murderous psychos.

adjective

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  • Psychopathic.
    More example sentences
    • I love blood and gore and crazed psycho killers come back from the dead.
    • They were scrawny but muscly trashy types, like my in-and-out, in-and-out of prison psycho cousin.
    • I would come back and watch all my favourite violent psycho movies.

Origin

1930s: abbreviation.

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a small amount; a little