C2If something such as ajokewearsthin, itbecomesboringorannoyingorstopsbeingfunnyoreffective, because it has beenseen,heard, or used too much:
（因出现太多而）失去吸引力（或趣味），不再有效 Tony, thejokeisbeginningtowearthinnow - it'stimetostop.托尼，那个笑话现在已经变得不那么好笑了——别再讲了。
Herstandardexcusefor being late wasbeginningtowearthin.她迟到时常用的那个借口已经开始不太管用了。