What is another word for fatten out?
Pronunciation: [fˈatən ˈa͡ʊt] (IPA) 
Fatten out is a phrasal verb that implies weight gain or bulking up. While this term may be apt for animal husbandry, it may not be appropriate for human vocabulary. Fortunately, there are synonyms that can replace this phrase and still convey the same meaning. Some of these synonyms include flesh out, plump up, fill out, put on weight, gain weight, and bulk up. Depending on the context, these alternatives can be used interchangeably with fatten out. For example, to say that a person has put on weight, one can use either fatten out or gain weight. By utilizing these synonyms, one can effectively communicate weight gain or bulkiness in a more appropriate manner.
