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fat

plump / animal grease / to fatten

/fæt/

AdjectiveTransitive Verb[C/U] Both
comp: fattersup: fattest

Uncountable when referring to the greasy substance in general or as a nutrient ('saturated fat'). Countable when referring to specific deposits of adipose tissue on a body ('the pockets of fat around the waist').

💬Casual Conversation

🎬Tuesday afternoon, Sarah is staring at a low-res image file sent by David.
Sarah

This file is way too fat. It'll crash the site.

Sarah
David
David

Just lean into it and optimize the bandwidth, Sarah.

💡
Sarah uses 'fat' as a colloquialism for a file size that is too large. David responds with 'lean into it', a corporate buzzword meaning to embrace or accept a situation, which highlights his tendency to use business jargon incorrectly in a technical context.

Meanings

Adjectiveplump

Having a large amount of excess flesh; plump.

The fat cat slept on the sofa all afternoon.

Nounanimal grease

A natural oily or greasy substance occurring in animal bodies.

Trim the excess fat from the steak before cooking it.

Transitive Verbto fatten

To make someone or something fat by feeding them rich food.

They tried to fat the livestock quickly before the market opened.

Examples

The fat cat slept on the sofa all afternoon.

Trim the excess fat from the steak before cooking it.

They tried to fat the livestock quickly before the market opened.

Etymology

Derived from the Old English fat, which stems from the Proto-Germanic fatta. It is cognate with the Old Frisian fat and Middle Dutch vet, originally referring to the thick, oily substance found in animal tissues and later extending to describe the physical state of being plump.

Related Words

Last Updated: May 2026Report an Error