Compensation: Exaggerated manifestation of one character-trend as a defense against its opposite which is painfully repressed; relief in substitute symptom formation.

Complex: A group of ideas held together by emotion (usually referring to a group which is wholly or in part unconscious).

Compulsion: A persistent compelling impulse to perform some seemingly unreasonable (but really substitute or symbolic) act, or to hold some irrational fear or idea; an emotional force which has been separated from the original idea.

Conflict: (Special) Struggle between instincts (unconscious).

Conversion: (Special) The process by which a repressed mental complex expresses itself through a physical symptom.

Displacement: 1. Transposition of an emotion from its original idea to one more acceptable to the personality. 2. The shifting of emphasis, in dreams, from essential to less significant elements.

Dissociation: 1. The state of being shut out from taking active part (applied to a group of ideas), as in normal forgetfulness. 2. (Abnormal) An exaggerated degree of separation of groups of ideas, with loss to the personality of the forces or memories which these groups contain, as in double personality.

Fixation: Establishment in childhood of over-strong habit-reactions.

Free Association: A device for uncovering buried complexes by letting the mind wander without conscious direction.

Homo-sexual: The quality of being more attracted by an individual of the same sex (abnormal) than by one of the opposite sex (hetero-sexual, normal).