- a person who abandons or betrays their party or associates, especially in a time of trouble.
- an informer.
- a scab laborer.
- to desert one's party or associates, especially in a time of trouble.
- to turn informer; squeal: He ratted on the gang, and the police arrested them.
- to work as a scab.
Idioms about rat
Origin of rat
OTHER WORDS FROM ratrat·like, adjective
How to use rat in a sentence
In one study from 2006, surgical residents learning to splice tiny blood vessels in rats were trained in either a spaced sequence — one session a week, for four weeks — or all at once, blasting through all four sessions in a single, “massed,” block.Cramming may help for next-day exams. But for long-term memory, spacing out study is what works.|Sanjay Sarma, Luke Yoquinto|November 30, 2020|Washington Post
He had known that his mother, Sandy Quimby, a half-hour away in Eagle River, was a pack rat.Smallest health providers face biggest problem finding protective gear amid coronavirus surge|Amy Goldstein|November 22, 2020|Washington Post
The researchers then removed the rats from the pen for five minutes and swapped the locations of two objects.Warning! Junk foods can harm a teen’s brain|Sharon Oosthoek|November 19, 2020|Science News For Students
We saw that it actually reduced heroin-seeking behavior in the rat model.How Are Psychedelics and Other Party Drugs Changing Psychiatry? (Ep. 433)|Stephen J. Dubner|October 1, 2020|Freakonomics
Before the pandemic, most people in New York City called in rats they saw in the subway, in parks or right by restaurants.The ‘ratpocalypse’ isn’t nigh, according to service call data|Bethany Brookshire|July 14, 2020|Science News
I have no idea if he is the “friend” who ratted me out to Joseph Nye.Damn Right I Taped Kerry’s ‘Apartheid’ Talk|Josh Rogin|May 2, 2014|DAILY BEAST
In order to save himself, one of the five arrested growers ratted out Sanderlin, whom he referred to as “Andi.”‘Weeds’ Come to Life? Scarsdale Mom Arrested in Massive Pot Bust|Winston Ross, Eliza Shapiro|June 6, 2013|DAILY BEAST
“I ratted on the Aryan Brotherhood,” said former member Sullivan.What’s So Scary About the Texas Aryan Brotherhood? Take a Look at the Indictments|Christine Pelisek|April 3, 2013|DAILY BEAST
People ratted him out in return for a six month suspension, Armstrong reminded Winfrey.8 Juiciest Bits From Night Two of Lance and Oprah|Kevin Fallon|January 19, 2013|DAILY BEAST
It will be obvious that someone with a close but not affectionate relationship ratted her out.Should You Ignore Voter Fraud?|Justin Green|November 2, 2012|DAILY BEAST
Only about that dreadful Mr Trenchard; you know the reason why he ratted?Sybil|Benjamin Disraeli
Twenty-five years o' service in the life-savin' corps an' ain't let to go out now without these der-r-r-ratted contraptions!The Flying Death|Samuel Hopkins Adams
If claims are ratted it is said there are strangers about, and the miners deal with rats according to their own ideas of justice.The Black Opal|Katharine Susannah Prichard
Either the consistent Radical, or the inconsistent Conservative Party, has 'ratted' in the most barefaced manner.Critical Studies|Ouida
He afterwards ratted and so helped to hang some of the best of them.The Yeoman Adventurer|George W. Gough
British Dictionary definitions for rat
- to divulge secret information (about); betray the trust (of)
- to default (on); abandonhe ratted on the project at the last minute
Derived forms of ratratlike, adjective
Word Origin for rat
Other Idioms and Phrases with rat
In addition to the idioms beginning with rat
- rat on
- rat race
- like a drowned rat
- smell a rat