fatty
1 Americannoun
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Disparaging and Offensive. a person who is overweight or obese (sometimes used as a term of address).
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a large marijuana cigarette, often shared and consumed by a group, with a shape and size similar to a cigar.
adjective
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containing, consisting of, or derived from fat
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having the properties of fat; greasy; oily
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(esp of tissues, organs, etc) characterized by the excessive accumulation of fat
noun
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of fatty1
Middle English word dating back to 1350–1400; see origin at fat, -y 1
Origin of fatty2
First recorded in 1790–1800 fatty 2 ( def. 1 ); 2003 fatty 2 ( def. 2 ); see origin at fat, -y 2
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“Pasteurizing milk kills or changes the natural enzymes, antibodies, and fatty acids that are critical to the physiology of how this works in your body.”
From Salon • Jun. 22, 2026
Meanwhile, GLP-1s may also help stroke, kidney and fatty liver diseases as well as sleep apnea, and research is under way to treat substance abuse, psychiatric and even neurodegenerative disorders.
From The Wall Street Journal • Jun. 21, 2026
He made several lifestyle changes, including getting more consistent sleep, doing more Zone 2 exercise and eating more salmon for the omega-3 fatty acids.
From The Wall Street Journal • Jun. 15, 2026
When fatty acids become part of pancreatic cell membranes, their chemical characteristics influence how easily those cells can be damaged by oxidation.
From Science Daily • Jun. 2, 2026
These are essential fatty acids and they are very important for human health.
From "The Omnivore's Dilemma" by Michael Pollan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
