1. containing a lot of fat or calories; likely to cause weight gain

1. present participle of fatten; the process of becoming or making something fatter or heavier

Examples

• Chocolate cake is a fattening dessert that many people enjoy in moderation.
• The farmer is fattening the cattle before selling them at market.
• Fast food is often criticized for being fattening and unhealthy.
• She avoided fattening foods while training for the marathon.
• The pig was fattening quickly on the farm's grain diet.
• Fattening up for winter is natural behavior for many animals.