Someone who practices psychotherapy.

A person with a personality disorder indicated by a pattern of lying, cunning, manipulating, glibness, exploiting, heedlessness, arrogance, delusions of grandeur, sexual promiscuity, low self-control, disregard for morality, lack of acceptance of responsibility, callousness, and lack of empathy and remorse. Such an individual may be especially prone to violent and criminal offenses.

Exhibiting the behaviors and personality traits of a psychopath.

(dated) A psychopath.

A wild party where the drug acid is taken.

(psychiatry) Originating from or caused by state of mind; having a psychological rather than a physiological cause.

(psychology) The advocacy of one course of action in such a way as to persuade someone to take an opposite course

In a psychotic manner. / As a result of psychosis.

Of or pertaining to psychoanalysis.

Performed by or pertaining to the mind or spirit; mental, psychic. / (theology) Pertaining to the animal nature of man, as opposed to the spirit.