1fat 
/ˈfæt/ adjective
fat·ter; fat·test /ˈfæt/ adjective 1 : having a lot of extra flesh on your body : having a lot of body fat
▪ The dog is getting fat because you feed him too much. ▪ a cute, fat baby ▪ I can't believe I've let myself get so fat. ▪ a movie that has a lot of fat jokes [=jokes about fat people] ◊Fat can be an insulting word when it is used to describe a person.
▪ She called him a big, fat slob. ▪ She's gotten really fat. [=(more politely) big, heavy] — opposite 1thin 2 : having a full, rounded form
▪ a fat belly ▪ a fat, juicy peach ◊A fat lip is a lip that is swollen because of injury, especially from being punched.
▪ He threatened to give me a fat lip. [=he threatened to punch me] 3 : unusually wide or thick
▪ a fat book of poems ▪ a fat envelope ▪ a truck with fat tires 4 informal : containing, providing, or costing a large amount of money
▪ a fat bank account ▪ He signed a fat contract. ▪ The company offered her a fat salary. ▪ a fat check [=a check for a large amount of money] ▪ He had to pay a fat [=big] fine. 5 informal + disapproving : successful or wealthy
▪ The company grew fat on profits during the war. 6 baseball : easy to hit
▪ a fat pitch right down the middle of the plate
▪ The dog is getting fat because you feed him too much. ▪ a cute, fat baby ▪ I can't believe I've let myself get so fat. ▪ a movie that has a lot of fat jokes [=jokes about fat people] ◊Fat can be an insulting word when it is used to describe a person.
▪ She called him a big, fat slob. ▪ She's gotten really fat. [=(more politely) big, heavy] — opposite 1thin
▪ a fat belly ▪ a fat, juicy peach ◊A fat lip is a lip that is swollen because of injury, especially from being punched.
▪ He threatened to give me a fat lip. [=he threatened to punch me]
▪ a fat book of poems ▪ a fat envelope ▪ a truck with fat tires
▪ a fat bank account ▪ He signed a fat contract. ▪ The company offered her a fat salary. ▪ a fat check [=a check for a large amount of money] ▪ He had to pay a fat [=big] fine.
▪ The company grew fat on profits during the war.
▪ a fat pitch right down the middle of the plate
big fat
— used for emphasis ▪ That's a big fat lie! ▪ Come here and give me a big fat kiss. ▪ He came home with a big fat F [=a failing grade] on his report card.
fat chance — see 1chance
it ain't over until/till the fat lady sings — see lady
— fat·ness noun [noncount]
▪ body fatness
▪ body fatness
