fattening

adjective

fat·​ten·​ing ˈfa-tə-niŋ 

ˈfat-niŋ

: causing or tending to cause an increase in body fat

fattening foods

… at about 45 calories in a three-and-a-half-ounce portion, it's no more fattening than other starchy vegetables.

—Mary-Ellen Banashek

Word History

First Known Use

1877, in the meaning defined above