rat on

Idioms & Phrases

rat on

Betray a comrade by giving information, as in He ratted on his best friend to the police. [Slang; early 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
Cite This Source
Explore Dictionary.com
Previous Definition: rat nest
Next Definition: rat opossum
Words Near: rat on
More from Thesaurus.com
Synonyms and Antonyms for rat on
More from Reference.com
Search for articles containing rat on
More from Dictionary.com Translator
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature