Psychology or psychiatry. / A psychologist; a psychiatrist.

(informal) Psychedelic. / (informal) Psychiatric.

(transitive, reflexive) To put (someone) into a required psychological frame of mind (also psych up). / (transitive) To intimidate (someone) emotionally or using psychology (also psych out).

(slang) Indicating that one's preceding statement was false and that one has successfully fooled one's interlocutor. / (dated, slang) An interjection of surprised happiness.

present participle of psyche

plural of psych

Third-person singular simple present indicative form of psych

(idiomatic, informal) In a state of heightened mental preparedness for a difficult or hazardous enterprise, or one where success is particularly sought.

A Grecian knot.

plural of Psyche knot