fatten

verb

fat·​ten ˈfa-tᵊn How to pronounce fatten (audio)
fattened; fattening fa-tə-niŋ How to pronounce fatten (audio)
ˈfat-niŋˈ

transitive verb

1
a
: to make fat, fleshy, or plump
especially : to feed (an animal) for slaughter
b
: to make more substantial
2
: to make fertile

intransitive verb

: to become fat
fattener
ˈfa-tə-nər How to pronounce fatten (audio)
ˈfat-nər
noun

Examples of fatten in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Pliny the Elder described how snails were raised in ponds and given wine to fatten them up. Garritt C. Van Dyk, Smithsonian Magazine, 29 May 2025 Record high after record high on Wall Street Across the Biden era, US stocks posted strong gains, fattening retirement accounts and providing hefty returns for investors. Alicia Wallace, CNN, 19 Jan. 2025 This is a particularly brutal blow for Harvard, which has been relying on rich international students to fatten their coffers for decades. Joe Battenfeld, Boston Herald, 27 May 2025 The biggest crypto firms spent lavishly in 2023 and 2024 to fatten Fairshake’s war chest, which collected more than $162 million in that time frame; Coinbase contributed $46.5 million, Ripple Labs, $45 million and Andreessen Horowitz, a major crypto investor, $44 million. Michael Hiltzik, Los Angeles Times, 15 May 2025 See All Example Sentences for fatten

Word History

First Known Use

circa 1552, in the meaning defined at transitive sense 1a

Time Traveler
The first known use of fatten was circa 1552

Browse Nearby Words

Cite this Entry

“Fatten.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fatten. Accessed 5 Jul. 2025.

Kids Definition

fatten

verb
fat·​ten ˈfat-ᵊn How to pronounce fatten (audio)
fattened; fattening ˈfat-niŋ How to pronounce fatten (audio)
-ᵊn-iŋ
: to make or become fat
fattener noun

More from Merriam-Webster on fatten

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!