ratfink
/ˈrætˌfɪŋk/
noun
- A person who is disliked because they inform on others or betray a secret.
- My little brother is such a ratfink — he ran straight to Mom when I snuck a cookie.
- Nobody trusted Kevin after he turned out to be a ratfink and told the teacher about the prank.
- In the old gangster movies, the hero always had to deal with a ratfink who snitched to the police.
Antonyms