fattier; fattiest
1
: containing fat especially in unusual amounts
fatty foods
also
: unduly stout : corpulent
2
: greasy
3
: derived from or chemically related to fat
fattiness
noun
plural fatties
informal
: one that is fat
especially, disparaging + offensive
: an overweight person
Examples of fatty in a Sentence
Adjective
I try to avoid fatty foods.
fatty ground beef that was the cheapest available
Recent Examples on the Web
Dave Smith, Fortune, 22 Oct. 2025
If your goal is to get the most omega-3s, choose fattier fish, like salmon.
—Merve Ceylan, Health, 22 Oct. 2025
Mrigakshi Dixit, Interesting Engineering, 4 Nov. 2025
The researchers tested IC7Fc in female mice that had been genetically modified to have human-like cholesterol metabolism and to easily develop atherosclerosis, a fatty plaque build-up in arteries that’s associated with heart disease.
—New Atlas, 3 Nov. 2025
See All Example Sentences for fatty
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Adjective
Much of what is imported is lean beef trimmings that meatpackers mix with fattier beef produced in the United States to produce the varieties of ground beef that domestic consumers want, so any change in imports would affect primarily hamburger.
—Dave Smith, Fortune, 22 Oct. 2025
If your goal is to get the most omega-3s, choose fattier fish, like salmon.
—Merve Ceylan, Health, 22 Oct. 2025
Noun
Composed of elements like proteins, fatty lipids, and sugars, the yeast biomass remaining after alcohol and drug production is typically classified as a byproduct or waste.
—Mrigakshi Dixit, Interesting Engineering, 4 Nov. 2025
The researchers tested IC7Fc in female mice that had been genetically modified to have human-like cholesterol metabolism and to easily develop atherosclerosis, a fatty plaque build-up in arteries that’s associated with heart disease.
—New Atlas, 3 Nov. 2025
See All Example Sentences for fatty
Cite this Entry
“Fatty.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fatty. Accessed 10 Nov. 2025.
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