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fatty

adjectivenouncommon in dialogue

  • United Kingdom//ˈfæt.i//
  • United States//ˈfæt.i//

Containing, composed of, or consisting of fat.

adjective

  1. 1

    Containing, composed of, or consisting of fat.

    fatty tissues

    fatty meats

    Then in the case of excisions you have all kinds of secondary changes, pigmentary disturbances, modifications of the passions, alterations in the secretion of fatty tissue.

  2. 2

    Containing, composed of, or consisting of fat. Sometimes, especially, containing excess fat.

    fatty liver

    fatty pancreas

    That means eating fruits and vegetables and cutting back on fatty foods.

    As we age, the major arteries of our bodies frequently become thickened with plaque, a fatty material with an oatmeal-like consistency that builds up along the inner lining of blood vessels.

  3. 3

    Like fat; greasy.

  4. 4

    Of or related to fat.

    fatty acid

    fatty alcohol

    1849, Hippocrates (Translated by Francis Bacon), Of the Epidemics, Book II, Section 1. On the sixth, stools black, fatty, viscid, fetid; slept, more collected.

    […]which had a greasy and fatty surface like cold broth

  5. 5

    slangLiterally or figuratively large.

    Be careful of the taxi drivers out there though, I've heard they sell you drugs, drop you off at your hotel and then dob you in to the Thai Police to get a fatty reward!

    Instead of going my normal route (ordering the book through the store, checking it out in person, and then ordering it online so I could get a fatty discount) I impulsively bought the book.

    I'm trying to get a fatty project done in a couple of hours right now.

Etymology

From Middle English fatty, equivalent to fat + -y. Cognate with Saterland Frisian fattig (“fatty”), Dutch vettig (“fatty, greasy”), German Low German fettig (“fatty”), German fettig (“fatty”).

noun

  1. 1

    slangAn obese person.

    It's hardly surprising, when it has to support that enormous gut! Lose some weight, fatty!

  2. 2

    slangA large marijuana cigar; a blunt.

    We went to Plaster Creek, smoked a fattie, and emerged doing somersaults and cartwheels and laughing.

  3. 3

    A type of game played with marbles.

Etymology

Etymology tree English fat Proto-Germanic *-j-, *-ij- Proto-West Germanic *-i, *-ī Old English -iġ Middle English -y English -y English fatty From fat + -y (diminutive suffix).

Forms

plural
fatties
comparative
fattier
superlative
fattiest
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).