noun, plural fat·ties. Informal.

Disparaging and Offensive. a person who is overweight or obese (sometimes used as a term of address).
a large marijuana cigarette, often shared and consumed by a group, with a shape and size similar to a cigar.

Origin of fatty

1790–1800 for def.1; 2003 for def. 2; fat-y2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fatties

Historical Examples of fatties

  • You know that these fatties actually follow me around on the net now, asking me questions in message boards about engineering?


    Cory Doctorow

  • Lester was more interested in what people had to say on the engineering message-boards than chatting with the fatties.


    Cory Doctorow

British Dictionary definitions for fatties


adjective -tier or -tiest

containing, consisting of, or derived from fat
having the properties of fat; greasy; oily
(esp of tissues, organs, etc) characterized by the excessive accumulation of fat

noun plural -ties

informal a fat person
Derived Formsfattily, adverbfattiness, noun
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

Word Origin and History for fatties



late 14c., from fat + -y (2). As a name for a fat person, attested by 1797 (with -y (3)).

Online Etymology Dictionary, © 2010 Douglas Harper

fatties in Medicine




Containing or composed of fat.
Characteristic of fat; greasy.
Derived from or chemically related to fat.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.