1. people who tell on others, especially children who report the misbehavior of other children to adults
Usage: informal; often used by children

Examples

• The teacher told the students not to be tattletales unless someone was really in danger.
• Nobody likes tattletales who report every little thing their classmates do.
• The children called him a tattletale for telling the principal about the food fight.
• She was known as one of the biggest tattletales in the whole school.
• The siblings promised not to be tattletales and keep each other’s secrets.
• Parents often struggle with when their children should report problems versus being tattletales.