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.

Common Names:

Name	Pronounced	Usage
Isma'il	-	Arabic
Leonie	LE-o-nee (German), lay-o-NEE (Dutch)	German, Dutch
Maxim	mahk-SEEM (Russian)	Russian, Ukrainian, Belarusian
Gordon	['gɔ:dn]
Damian	['deimiən]
Reynolds	['renəldz]