Skip to content

ratfink

rat·fink

Today it means: An informer or spy; a traitor. Full definition →

First used 1960s

Ask AI about its historyChatGPT Claude Perplexity Google AI Grok

The story

From rat + fink.

First known use, by meaning

from 1960s An informer or spy; a traitor.
from 1960s A dislikable or contemptible person.
from 1970s To inform on; to betray.

Etymology from Wiktionary, CC BY-SA 4.0.