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

In addition to lean protein, like eggs, Swick says that fruits, vegetables, whole grains, legumes, fatty fish and other healthy fats from plants should be part of each meal. —Jillian Pretzel, Parents, 8 Jan. 2025

Look for conditioning products that contain ingredients such as glycerin, argan oil, or a fatty alcohol such as cetyl or stearyl alcohol.18 If using a dandruff shampoo, follow directions, then use a moisturizing shampoo after. Use a comb or brush designed for curly hair. —Heather Jones, Verywell Health, 4 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