What does fattest mean?
'Fattest' is the superlative form of the adjective 'fat', used to describe whichever person, animal, or thing in a comparison has the most body fat, bulk, or sheer size. Its most familiar application is to people and animals — the fattest child in a class photograph, the fattest hog at a country fair — but it extends naturally to objects and quantities: the fattest wallet in the room, the fattest volume on a shelf, the fattest pay packet of one's career. In these figurative uses the word often carries a positive, even enviable connotation, signalling abundance rather than excess. Applied directly to people's bodies, however, 'fattest' is blunt and can be hurtful or stigmatizing, so careful writers tend to reserve it for animals, objects, and abstractions, choosing gentler language elsewhere. Like all superlatives, it presupposes a comparison across three or more candidates; between two options the comparative 'fatter' is appropriate. Simple, vivid, and instantly understood, it remains a staple of everyday English description.
adjectiveThe superlative form of 'fat': most characterized by an excess of flesh or bulk; largest or heaviest in body. More broadly, the greatest in extent, amount, or degree among things compared.
- (of a person or animal) superlative of fat: having the most excess flesh or body weight among those compared.
- (of a thing) largest, thickest, or most abundant in size or quantity: e.g. the fattest wallet, the fattest file.
- (informal, figurative) richest or most lucrative: e.g. the fattest paycheck or profit margin.
"The fattest cat in the shelter was adopted within a week."
"He jokingly called his tabby the fattest cat on the block."
"The company posted its fattest quarterly profits in a decade."
In old English law, the 'fattest' animals were reserved for feast days — being the fattest once meant you were literally worth celebrating.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fattest
'Fattest' derives from 'fat', an Old English word ('fǣtt') meaning fatted or plump with flesh, which itself traces back to Proto-Germanic roots related to being well-fed or stuffed. The word 'fat' has cognates across the Germanic family — including German 'fett' and Dutch 'vet' — all descending from that shared ancestor, and its sense of 'rich, abundant' developed early alongside the physical one. As a superlative formed through English's regular inflectional system, 'fattest' emerged naturally as the adjective was standardized in Middle and early Modern English. It is thus thoroughly Germanic in origin, with no Latin or Greek ancestry.
Related word forms
How fattest is actually used
Applied to people, 'fattest' is blunt and can carry stigmatizing connotations; it is generally more acceptable when describing animals, objects, or figurative quantities like paychecks and margins. As the superlative of 'fat', it implies a direct comparison among three or more things; use 'fatter' for comparisons between two.
Easily confused with fattest
'Fattest' is the superlative of fat (most corpulent), while 'fitter' is the comparative of fit (more healthy or suitable) — near-opposites in connotation despite similar sound.