The act or an instance of indulging; gratification: indulgence of every whim. The state of being indulgent. The act of indulging in something: indulgence in irresponsible behavior. Something indulged in: Sports cars are an expensive indulgence. Liberal or lenient treatment; tolerance: treated their grandchildren with fond indulgence. Self-indulgence: a life of wealth and indulgence. Something granted as a favor or privilege. Permission to extend the time of payment or performance. Patient attention: I beg your indulgence for just a few minutes. Roman Catholic Church The remission of temporal punishment still due for a sin that has been sacramentally absolved. Roman Catholic Church To attach an indulgence to.