psycho

4 definitions • 4 examples

someone who is crazy and frightening:

The man's a psycho.

(of a person) crazy and frightening:

He suddenly went psycho and started shooting in all directions.

He plays a psycho killer who pushes a woman down a flight of stairs to her death.

of the mind or mental processes:

psychopharmacology (= the study of drugs which affect the mind)

a psychopath