mid-13c., counseiler, "one who gives counsel or advice, a confidante," from Old French conseillier "counselor, adviser" (Modern French conseiller), from Latin consilator, agent noun from consiliare, from consilium (see counsel (v.)).
"the theory or therapy of treating mental disorders by investigating unconscious elements and bringing repressed fears and conflicts to the patient's awareness,"
from Psychoanalyse, coined 1896 in French by Freud from Latinized form of Greek psykhē "the soul, mind, spirit; understanding" (see psyche) + German Analyse, from Greek analysis (see analysis). Freud earlier used psychische analyse (1894).
also psycho-drama, "form of psychotherapy involving the acting out of a patient's problems and difficulties," 1937 (in writing of U.S. psychiatrist Jacob L. Moreno (1889-1974)), from psycho- + drama. Related: Psychodramatic.