Inhibit. Definition. verb. (general). To hold back, curb, hinder, restrain, prohibit, or arrest; as in to inhibit an action. (chemistry, biology). To limit, prevent or block the action or function of; as in to inhibit an enzyme, or to inhibit a chemical reaction.(psychology). To suppress or restrain a behavior, an impulse, or a desire consciously or unconsciously.efinition. verb. (general). To hold back, curb, hinder, restrain, prohibit, or arrest; as in to inhibit an action. (chemistry, biology). To limit, prevent or block the action or function of; as in to inhibit an enzyme, or to inhibit a chemical reaction.