fatten up

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fatten up

verb fattens up · fattened up · fattening up

transitive To cause to gain weight by means of feeding. My cat looks underweight, so I'll fatten him up with higher-calorie cat food.
intransitive To become fat or fatter by gaining weight. ‘And isn’t Declan looking very thin?’ Madge said. ‘He’ll never get a wife if he doesn’t fatten up a bit.’
figuratively, transitive To make bigger; to expand. We must not fatten up our payroll with people performing nonessential activities.

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MLA

"fatten up." Wiktionary, via Micwyn, micwyn.com/word/fatten%20up. Accessed 6 Nov. 2026.

APA

fatten up. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/fatten%20up

Chicago

"fatten up." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/fatten%20up.

BibTeX

@misc{fatten_up_2026,
  title = {fatten up},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/fatten%20up},
  urldate = {2026-11-06}
}