˜yÐÄvlog

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rat

[ rat ]

noun

  1. any of several long-tailed rodents of the family Muridae, of the genus Rattus and related genera, distinguished from the mouse by being larger.
  2. any of various mammals similar to or related to the long-tailed rodents of the genus Rattus.
  3. Slang. a scoundrel.
  4. Slang.
    1. a person who abandons or betrays their party or associates, especially in a time of trouble.
    2. a scab laborer.
  5. Slang. a person who frequents a specified place: gym rats.

    a mall rat;

    gym rats.

  6. a pad with tapered ends formerly used in women's hairstyles to give the appearance of greater thickness.


interjection

  1. rats, Slang. (an exclamation of disappointment, disgust, or disbelief.)

verb (used without object)

ratted, ratting.
  1. Slang.
    1. to desert one's party or associates, especially in a time of trouble.
    2. to turn informer; squeal:

      He ratted on the gang, and the police arrested them.

    3. to work as a scab.
  2. to hunt or catch rats.

verb (used with object)

ratted, ratting.
  1. to make (the hair) appear thicker by use of a small pad of material or by teasing.

verb phrase

  1. Slang. to inform on:

    He ratted out his partners in exchange for a lighter sentence.

rat

/ °ùæ³Ù /

noun

  1. any of numerous long-tailed murine rodents, esp of the genus Rattus , that are similar to but larger than mice and are now distributed all over the world See also brown rat black rat
  2. informal.
    a person who deserts his or her friends or associates, esp in time of trouble
  3. informal.
    a worker who works during a strike; blackleg; scab
  4. slang.
    an informer; stool pigeon
  5. informal.
    a despicable person
  6. smell a rat
    to detect something suspicious
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. informal.
    intrusually foll byon
    1. to divulge secret information (about); betray the trust (of)
    2. to default (on); abandon

      he ratted on the project at the last minute

  2. to hunt and kill rats
“Collins English Dictionary — Complete & Unabridged†2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˈ°ù²¹³ÙËŒ±ô¾±°ì±ð, adjective
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Other ˜yÐÄvlog Forms

  • °ù²¹³Ù·±ô¾±°ì±ð adjective
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˜yÐÄvlog History and Origins

Origin of rat1

First recorded before 1000; Middle English rat(t)te, Old English °ùæ³Ù; cognate with Dutch rat, German Ratz, Ratte
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˜yÐÄvlog History and Origins

Origin of rat1

Old English °ùæ³Ùt ; related to Old Saxon ratta , Old High German rato
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Idioms and Phrases

  1. smell a rat, to suspect or surmise treachery; have suspicion:

    After noting several discrepancies in his client's story, the attorney began to smell a rat.

More idioms and phrases containing rat

  • like a drowned rat
  • smell a rat
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Example Sentences

Examples have not been reviewed.

A landmine-detecting rat in Cambodia has set a new world record to become the first rodent to uncover more than 100 mines and other deadly war remnants.

From

The pest controller advised residents to store their rubbish in outdoor sheds with hard floors so the rats were unable to get through.

From

The petition found that Red No. 3 causes cancer in male laboratory rats exposed to high levels of the dye.

From

One of Japan's biggest restaurant chains is closing its outlets for cleaning, after two incidents of customers finding pests, including a rat, in their food.

From

When the rats come up from the sewers, he said, a tap of the sticks would make them scatter.

From

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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