fatty

1 of 2

adjective

fat·​ty ˈfa-tē 

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

fatty

2 of 2

noun

plural fatties

informal

: one that is fat

especially, disparaging + offensive : an overweight person

Synonyms

Adjective

• adipose

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

Adjective

Browns are looking to gorge themselves and often key in on the fattiest food source—eggs. —Max Inchausti, Field & Stream, 22 May 2024

Resident killer whales are an ecotype that specialize in eating salmon, particularly large, fatty, and nutritious Chinook salmon. —Laura Baisas, Popular Science, 15 May 2024

Noun

In recent years, coconut oil had been given a pass because of its unique fatty profile. —Ashley Weatherford, The Cut, 19 June 2017

Word History

First Known Use

Adjective

14th century, in the meaning defined at sense 1

Noun

1797, in the meaning defined above

Kids Definition

fatty

adjective

fat·​ty

ˈfat-ē

fattier; fattiest

1

: containing fat especially in unusual amounts

2

: greasy sense 2

fattiness noun

Medical Definition

fatty

adjective

fat·​ty ˈfat-ē 

fattier; fattiest

1

a

: unduly stout : corpulent

b

: marked by an abnormal deposit of fat

a fatty liver

fatty cirrhosis

2

: derived from or chemically related to fat

fattiness noun