Neutrality refers to a term used to describe the therapist's ability to maintain an objective viewpoint in analyzing the client's issues according to psychoanalytic principles.
Moreover, Neutrality is when the clinician does not provide any information that would reveal the clinician's preferences, personal background, or reactions to the client's revelations in therapy.
Other /More definition:
Neutrality is a term which means that the clinician does not provide any information that would reveal the clinician's preferences, personal background, or reactions to the client's revelations in therapy.