A tattletale is someone who tells an adult, a teacher, or a person in charge about the small bad things another child did. It is children's language, American English — British children say 'telltale' or 'sneak'.

A tattletale愛打小報告的人 is someone指的是有人 who tells an adult, a teacher, or a person in charge會去跟大人、老師，或負責的人講 about the small bad things another child did另一個小孩做的小壞事 It is children's language這是小孩子的用語 American English是美式英文 British children英國小孩 say 'telltale' or 'sneak'則說'telltale'或'sneak'

It is an insult, though a small one: the child who is called a tattletale is being told that reporting your friends is worse than whatever they did.

It is an insult這是一種罵人的話 though a small one不過算是輕的 the child who is called a tattletale被叫做tattletale的小孩 is being told其實是被說 that reporting your friends打小報告 is worse than whatever they did比他們做的事還糟

Adults use it back to children too ('don't be a tattletale'), and here is the honest problem with it — grown-ups sometimes use the word to silence a child who is reporting something real and serious. That is worth saying out loud to your students.

Adults大人 use it back to children too也會反過來對小孩用這個字 ('don't be a tattletale')（「別打小報告」） and here is the honest problem with it不過老實說這個字有個問題 grown-ups有時候大人 sometimes use the word會用這個字 to silence a child讓一個小孩閉嘴 who is reporting something real and serious即使他講的是真實、嚴重的事 That is worth saying out loud to your students這點值得跟學生說清楚

It is also used as an adjective for something that gives a secret away: a tattletale stain, a tattletale grey.

It is also used as an adjective它也可以當形容詞用 for something that gives a secret away指某樣東西洩漏了秘密 a tattletale stain一塊出賣你的污漬 a tattletale grey一種洩底的灰色

Adults rarely use it about other adults; for that, English says 'snitch' or 'informer'.

Adults大人 rarely use it about other adults很少用這個字說另一個大人 for that對這種情況 English英文 says 'snitch' or 'informer'會說'snitch'或'informer'