a rat fink



a rat fink

  (American informal)
an extremely unpleasant person, or someone who has given secret information about you to the police If I find the rat fink who informed on me, he won't live long enough to do it again.
See also: fink, rat

Common Names:

NameGenderPronouncedUsage
Robertas-Lithuanian
Deloradə-LAWR-əEnglish
Yllka-Albanian
Muhsina-Arabic
Bogomil-Bulgarian, Macedonian
Mathilda[mə'tildə]