snitch

/snɪtʃ/
verb
  1. To inform on someone, especially to an authority figure, about a wrongdoing.
    • The witness decided not to snitch to the police.
    • Kids who snitch are often called tattletales.
    • He snitched on his classmates for cheating on the test.
Synonyms
Antonyms
noun
  1. A person who informs on others, especially to an authority figure.
    • The gang warned that snitches would be punished.
    • Nobody trusted him because he was known as a snitch.
    • She refused to be a snitch and kept her friend's secret.