Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Containing or composed of fat: fatty food; fatty deposits.
  • adj. Characteristic of fat; greasy.
  • adj. Derived from or chemically related to fat.
  • n. Offensive A fat person.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Containing, composed of, or consisting of fat.
  • adj. Like fat; greasy.
  • adj. Literally or figuratively large.
  • n. An obese person.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Containing fat, or having the qualities of fat; greasy; gross.

from The Century Dictionary and Cyclopedia

  • Consisting of fat.
  • Containing fat; adipose: as, fatty tissue.
  • Having certain of the properties of fat; especially, having a greasy feel; resembling fat.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. containing or composed of fat
  • n. a rotund individual

Etymologies

From fat +‎ -y. Cognate with Dutch vettig ("fatty, greasy"), German fettig ("fatty"). (Wiktionary)

Examples

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