(1) Depression or arrest of a function.inhibitor. (2) In psychoanalysis, the restraining of instinctive or unconscious drives or tendencies, especially if they conflict with one's conscience or with societal demands. (3) In psychology, a generic term for a variety of processes associated with the gradual attenuation, masking, and extinction of a previously conditioned response. (4) The reduction of the rate of a reaction or process. [L. inhibeo, pp. -hibitus, to keep back, fr. habeo, to have]