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 of fatty

Adjective

• greasy
• 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

Many beers, especially ones that are highly carbonated, are well-matched for food that is fatty, rich or sometimes even spicy, and can cut through and cleanse the palate between bites. —Jay R. Brooks, Mercury News, 24 Nov. 2025

Videos taken by scientists in Mexico reveal how the crafty whales manage to snag bites of the apex predators’ fatty organs. —Evan Bush, NBC news, 3 Nov. 2025

Noun

Garten's recipe calls for 81% lean ground chuck, which keeps the dish from being too fatty. —Betsy Cribb Watson, Southern Living, 17 Nov. 2025

Omega-3 fatty acids are an essential nutrient that the body cannot produce on its own, but instead obtains from food, especially fatty fish. —Mira Miller, Verywell Health, 13 Nov. 2025

Word History

First Known Use

Adjective

14th century, in the meaning defined at sense 1

Noun

1797, in the meaning defined above

Rhymes for fatty

• batty
• catty
• chatty
• natty
• pattie
• patty
• ratty
• tatty

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