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Verb: fatten up
  1. Make fat or plump
    "We will fatten up out that poor starving child"
    - fatten, fat, flesh out, fill out, plump, plump out, fatten out

Derived forms: fattened up, fattening up, fattens up

Type of: alter, change, modify

Nearest

fatless
fatling
fatness
Fats Domino
Fats Waller
fatso
fat-soluble
fat-soluble vitamin
fatten
fatten out
fatten up
fattened
fattening
fattiness
fattish
fattism
fatty
fatty acid
fatty liver
fatty oil
fatty tissue