fatty

1 of 3

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 3

noun (1)

plural fatties

informal

: one that is fat

especially, disparaging + offensive : an overweight person

fattiness

3 of 3

noun (2)

fat·​ti·​ness

|ēnə̇s, 

|in-

plural -es

: the quality or state of being fatty

made ill by the excessive fattiness of the meal

made greasy by the fattiness of the wool

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

Eat More Fish and Lean Poultry Instead of fattier meat dishes, try to incorporate more fish and lean poultry into your diet. —Vanessa Caceres, Verywell Health, 4 May 2026

Only have fattier or leaner meat? —Josh Miller, Southern Living, 17 Apr. 2026

Noun

These are wines that pair beautifully with rich dishes, oily, unctuous fish with tomato, and pasta sauces that are rich and fatty. —Valentina Di Donato, Forbes.com, 6 June 2026

In addition to beets, top choices include leafy greens, berries, beans, fatty fish, and bananas. —Lindsey Desoto, Health, 4 June 2026

Word History

First Known Use

Adjective

14th century, in the meaning defined at sense 1

Noun (1)

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