psycho; psychopath; crazy person
Casual term for someone who is mentally unstable, dangerously irrational, or extremely eccentric. Often used loosely as slang.
That guy suddenly got angry—he's a real psycho.
That guy is seriously a psycho.
The psycho killer in the horror movie was scary.
映画にはサイコな殺人犯が出てくる。
A psycho killer appears in the movie.
psychopath
psychokinesis
psycho killer
psychograph
psychodrama
psychotherapy
psychological
psychoanalysis
psychotherapist
psychogalvanometer
Borrowed from English 'psycho', a clipping of 'psychopath' or 'psychotic'.