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Definition of fat adjective from the Oxford Advanced American Dictionary

      

    fat

     adjective
    adjective
    NAmE//fæt//
     
    (fatter, fattest)
     
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  1. 1(of a person's or an animal's body) having too much flesh on it and weighing too much a big, fat man/woman You'll get fat if you keep eating so much junk food. He grew fatter and fatter. fat, flabby legs opposite thin
  2. 2thick or wide a fat volume on American history
  3. 3[only before noun] (informal) large in quantity; worth a lot of money a fat sum/profit He gave me a nice fat check.
fatness
 
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noun [uncountable] Fatness tends to run in families. Vocabulary Buildingsaying that someone is fat
  • Fat is the most common and direct word, but it is not polite to say to someone that they are fat:Does this dress make me look fat? You’re looking fat now.
  • Overweight is a more neutral word:I’m a little overweight.It can also mean too fat, especially so that you are not fit.
  • Large or heavy is less offensive than fat:He’s a fairly large man.Big describes someone who is tall as well as fat:Her sister is a big girl, isn’t she?
  • Plump means slightly fat in an attractive way, often used to describe women.
  • Chubby is used mainly to describe babies and children who are fat in a pleasant, healthy-looking way:the baby’s chubby cheeks
  • Tubby (informal) is used in a friendly way to describe people who are short and round, especially around the stomach.
  • Stocky is a neutral word and means fairly short, broad, and strong.
  • Stout is often used to describe older people who have a round and heavy appearance:a short, stout man with a bald head
  • Flabby describes flesh that is fat and loose:exercises to firm up flabby thighs
  • Obese is used by doctors to describe people who are so fat that they are unhealthy. It is also used in a general way to mean “really fat.”
Note that although people talk a lot about their own size or weight, it is generally not considered polite to refer to a person’s large size or their weight when you talk to them or about them. fat adjectivefatty adjectivefatten verbfattening adjectivefat adjectivefatty adjectivefatten verbfattening adjectiveIdioms
(a) fat chance (of something/doing something) (informal)
 
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used for saying that you do not believe something is likely to happen “They might let us in without tickets.” “Fat chance of that!”
a fat lot of good, use, etc. (informal)
 
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not at all good or useful Paul can't drive, so he was a fat lot of good when I broke my arm.
it's not over until the fat lady sings (saying)
 
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used for saying that a situation may still change, for example that a contest, an election, etc. is not finished yet, and someone still has a chance to win itSee fat in the Oxford Advanced Learner's Dictionary
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