tattle
verb [intransitive] (informal, disapproving, especially North American English)- tattle (on somebody) (to somebody)
to tell somebody, especially somebody in authority, about something bad that somebody else has done 向当权者告发；（就某人不端行为）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。
Word Originlate 15th cent. (in the sense ‘falter, stammer’, also ‘make meaningless sounds’, referring to a small child): from Middle Flemish tatelen, tateren, of imitative origin.