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sellout

American  
[sel-out] / ˈsɛlˌaʊt /

noun

  1. Informal. a person who compromises their personal values, integrity, talent, etc., for money or personal advancement.

  2. Informal. a person who betrays a cause, organization, or the like; traitor.

  3. an act or instance of selling out.

  4. an entertainment, as a show or athletic event, for which all the seats are sold.

Etymology

Origin of sellout

An Americanism dating back to 1855–60; noun use of verb phrase sell out

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.