Fatty

//ˈfæt.i// adj, noun, slang

adj, noun, slang ·Common ·High school level

Definitions

Noun
  1. 1
    An obese person. derogatory, slang

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

  2. 2
    a rotund individual wordnet
  3. 3
    A large marijuana cigar; a blunt. slang

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

  4. 4
    A type of game played with marbles.
Adjective
  1. 1
    Containing, composed of, or consisting of fat.

    "fatty tissues"

  2. 2
    Containing, composed of, or consisting of fat.; Sometimes, especially, containing excess fat.

    "fatty liver"

  3. 3
    Like fat; greasy.
  4. 4
    Of or related to fat.

    "fatty acid"

  5. 5
    Literally or figuratively large. slang

    "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!"

Adjective
  1. 1
    containing or composed of fat wordnet

Synonyms

All synonyms
adiposebutteryoleaginoussuetybifterbleezy

Example

More examples

"This is a rather fatty cut of meat."

Etymology

Etymology 1

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”).

Etymology 2

From fat + -y (diminutive suffix).

Related phrases

fatty acidfatty alcoholfatty bom bomfatty boombalattyfatty cuttyfatty liverfatty oilpartially defatted pork fatty tissue

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.