[ˈsʌɪkəʊ], (Noun)

Definitions:
- an irrationally aggressive or cruel person
(e.g: my ex is a total psycho)


Phrases:

Origin:
early 20th century: abbreviation of psycho or psychopathic

[ˈsʌɪkəʊ], (Adjective)

Definitions:
- exhibiting irrationally aggressive or cruel behaviour
(e.g: there's some kind of psycho shark out there)


Phrases:

Origin:
early 20th century: abbreviation of psycho or psychopathic