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Definition of Fatten up
1. Verb. Make fat or plump. "We will plump out that poor starving child" 
Exact synonyms: Fat, Fatten, Fatten Out, Fill Out, Flesh Out, Plump, Plump Out
Generic synonyms: Alter, Change, Modify
Entails: Feed, Give
Derivative terms: Fat, Fat
Generic synonyms: Alter, Change, Modify
Entails: Feed, Give
Derivative terms: Fat, Fat



