verb
make fat or plump
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We will plump out that poor starving child
• Syn:
• Verb Frames:
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Somebody ——s something
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Somebody ——s somebody
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ˌfatten ˈup [transitive] [present tense I/you/we/they fatten up he/she/it fattens up present participle fattening up past tense fattened up past participle fattened up] phrasal verb
to make a person or animal fatter
He could do with fattening up.
Main entry: fatten
Useful english dictionary. 2012.