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
Adjectives
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.
Fatty acids showed the opposite trend, with nonliving chemical processes producing more even distributions than biological ones.
From Science Daily • May 12, 2026
Fatty slices of avocado, dusted with everything bagel seasoning or drizzled in chili crisp?
From Salon • Jan. 29, 2026
And gone was the owner of the irreverent nickname "Fatty Lai": he had lost considerable weight.
From BBC • Dec. 20, 2025
The comedian Fatty Arbuckle was earning $5,000 a week and spending like it was his last paycheck, which, pretty soon, it was.
From Los Angeles Times • Jul. 17, 2024
Fond as he was of Frodo, Fatty Bolger had no desire to leave the Shire, nor to see what lay outside it.
From "The Fellowship of the Ring" by J.R.R. Tolkien
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.
