/ˈtætl ||; ˈtætḷ/verb [I] (especially US, informal 尤为美，非正式) tattle (on sb) (to sb) to tell sb, especially sb in authority, about sth bad that sb else has done 向当权者告发；打小报告: You should learn that you just don't tattle on classmates. 你应该认识到你不该打同学们的小报告。