fatten
[verb]
Synonyms:
- grow fat, expand, gain weight, put on weight, spread, swell, thicken
- often with up: feed up, build up, feed, nourish, overfeed, stuff

[TahlilGaran] English Synonym Dictionary ▲

fat‧ten /ˈfætn/ verb
[Word Family: adjective: fat, fattening, fatty, fatted; noun: fat, fatty; verb: fatten]

1. [intransitive and transitive] to make an animal become fatter so that it is ready to eat, or to become fat and ready to eat

2. [transitive] to make an amount larger:
These projects simply serve to fatten the pockets of developers.
fatten somebody/something ↔ up phrasal verb
to make a person or animal fatter:
My parents are always trying to fatten me up.

[TahlilGaran] Dictionary of Contemporary English ▲