fatter

Fatter is the comparative form of the adjective fat. It describes something that has more fat, or greater adiposity, than another object or person. This can refer to body composition in humans and animals, indicating higher levels of adipose tissue or greater overall body mass due to fat rather than lean tissue. It can also be used to describe foods or mixtures with higher fat content or richer fat profiles.

From a linguistic standpoint, fat is a short, simple adjective, with the comparative form fatter and the superlative fattest. The word originates in Old English and has cognates in other Germanic languages; the suffix -er signals the comparative.

Usage considerations include sensitivity around describing people. Because fat can be a stigmatizing term, some contexts prefer neutral language such as higher body fat percentage or increased adiposity, or specific measurements like body fat percentage or BMI. In nutrition, fatter is often used informally to indicate higher fat content in foods, for example fattier cuts of meat or richer sauces.

In health or research contexts, fatter is typically used descriptively rather than prescriptively, and it is one piece of a broader assessment of adiposity, health risks, and metabolic factors.