Fatten up

verb

Definitions

Verb
  1. 1
    To cause to gain weight by means of feeding. transitive

    "My cat looks underweight, so I'll fatten him up with higher-calorie cat food."

  2. 2
    make fat or plump wordnet
  3. 3
    To become fat or fatter by gaining weight. intransitive

    "‘And isn’t Declan looking very thin?’ Madge said. ‘He’ll never get a wife if he doesn’t fatten up a bit.’"

  4. 4
    To make bigger; to expand. figuratively, transitive

    "We must not fatten up our payroll with people performing nonessential activities."

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