Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

rat fink

noun

Definition of rat fink

: fink, informer
Synonyms Example Sentences Learn More about rat fink

Keep scrolling for more

Examples of rat fink in a Sentence

who's the sorry rat fink that went squealing to the cops? regrets ever doing business with that rat fink, who cheated him out of gobs of money

First Known Use of rat fink

1964, in the meaning defined above

Keep scrolling for more

Learn More about rat fink

Dictionary Entries near rat fink

rate range

rate setter

rate up

rat fink

ratfish

rat goose

rat guard

Statistics for rat fink

Look-up Popularity

Time Traveler for rat fink

The first known use of rat fink was in 1964

See more words from the same year

More from Merriam-Webster on rat fink

Rhyming Dictionary: Words that rhyme with rat fink

Thesaurus: All synonyms and antonyms for rat fink

Comments on rat fink

What made you want to look up rat fink? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

demeanor

Listen to the pronounciation of demeanor

behavior toward others

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a closeup of a sunflower
  • Which of the following words means “of or relating to summer”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games