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fatso

American  
[fat-soh] / ˈfæt soʊ /

noun

Informal: Disparaging and Offensive.

plural

fatsos, fatsoes

  1. a fat person (used as a term of address).

fatso British  
/ ˈfætsəʊ /

noun

  1. slang a fat person: used as an insulting or disparaging term of address

"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

Etymology

Origin of fatso

1940–45; perhaps Fats a nickname for a fat person ( see fat, -s 4) + -o; also compared with fat sow, German Fettsau

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.