noun
- people who inform on others or betray confidences; informants or tattletales
Usage: slang; derogatory
Examples
- The gang members called anyone who talked to police ratfinks.
- He accused his former friends of being ratfinks after they reported him.
- Nobody trusted the ratfinks in their group.
- The students avoided the ratfinks who always told the teacher everything.
- She was labeled one of the ratfinks for revealing the secret plan.