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

Though more research is needed, these oils tend to be more pro-inflammatory in the body, while omega-3 fats, which are found in foods like fatty fish, are anti-inflammatory. —Jillian Kubala, Health, 13 Jan. 2025

The fatty tuna is served with karashi aioli, jalopeno, pickled wasabi and ponzu gel on a small bed of extra crispy rice. —Madalyn Mendoza, Axios, 6 Jan. 2025

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