Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb fatten_up

1 sense of fatten up

Sense 1
fatten, fat, flesh out, fill out, plump, plump out, fatten out, fatten up -- (make fat or plump; "We will plump out that poor starving child")
       => change, alter, modify -- (cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue")