Dictionary.com
Thesaurus.com
Synonyms

fatty

1 American  
[fat-ee] / ˈfæt i /

noun

Informal.

plural

fatties
  1. Disparaging and Offensive. a person who is overweight or obese (sometimes used as a term of address).

  2. a large marijuana cigarette, often shared and consumed by a group, with a shape and size similar to a cigar.


fatty 2 American  
[fat-ee] / ˈfæt i /

adjective

fattier, fattiest
  1. consisting of, containing, or resembling fat.

    fatty tissue.

  2. Pathology. characterized by overproduction or excessive accumulation of fat.


fatty British  
/ ˈfætɪ /

adjective

  1. containing, consisting of, or derived from fat

  2. having the properties of fat; greasy; oily

  3. (esp of tissues, organs, etc) characterized by the excessive accumulation of fat

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. informal a fat person

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • fattily adverb
  • fattiness noun

Etymology

Origin of fatty1

First recorded in 1790–1800 fatty 2 ( def. 1 ); 2003 fatty 2 ( def. 2 ); fat, -y 2

Origin of fatty1

Middle English word dating back to 1350–1400; fat, -y 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The scans helped show white matter, the fatty substance that insulates the nerve fibers connecting brain regions.

From The Wall Street Journal

To reconstruct past rainfall, researchers collected sediment cores from Tahiti and Nuku Hiva in Eastern Polynesia and examined plant waxes -- fatty layers left on leaves.

From Science Daily

The secretary, who has said he follows a carnivore diet, has lauded food companies that use beef tallow, the melted-down fatty tissue of cattle carcasses, instead of seed oils.

From The Wall Street Journal

This interaction lowers inflammation caused by fatty foods and restores the body's ability to respond to insulin.

From Science Daily

A soaker is their thesis statement: a triple-beige stack of crisp-edged bread surrendering to brown gravy, studded with little hunks of meat that run a satisfying gradient from fatty to caramelized.

From Salon