What is another word for tattletale?
Pronunciation: [tˈatə͡ltˌe͡ɪl] (IPA) 
If you're looking for some alternative words to use instead of "tattletale", there are plenty of options available to you. For example, you could use the phrase "informant" to describe someone who shares information with authority figures. "Snitch" is another popular word that might come to mind, and it's often used to describe someone who provides information in order to avoid trouble themselves. Alternatively, you might describe someone as a "rat" if they're providing information that's damaging to others. Finally, "betrayal" is a more abstract concept that can describe any act of giving away information that's considered confidential or sensitive in some way. Consider these and other synonyms when trying to describe someone who shares information with others.
