Definition of fattening
: 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
First Known Use of fattening
Learn More about fattening
Seen and Heard
What made you want to look up fattening? Please tell us where you read or heard it (including the quote, if possible).