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

The ultra-lean trimmings imported on the cheap have been frozen, possibly for years, intended to be mixed with fattier domestic meat to make ground beef. — The Week Us, TheWeek, 2 Nov. 2026

For example, lean meat like turkey might benefit from the richness of cream, whereas a fattier meat like pork might be better off with milk (or water, or stock). — Los Angeles Times, 16 Oct. 2026

Noun

Found in fatty fish, like salmon, tuna, and sardines, these nutrients reduce the risk of chronic diseases such as heart disease and inflammatory arthritis. — Lana Barhum, Verywell Health, 4 Nov. 2026

In a small 2017 study, adults with overweight or obesity who ate fatty fish had better blood sugar responses after meals than those who ate lean fish. — Lindsey Desoto, HEALTH, 4 Nov. 2026

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