[ noh-brey-ner ]
See synonyms for no-brainer on
  1. Informal. anything requiring little thought or effort; something easy or simple to understand or do.

Origin of no-brainer

First recorded in 1975–80

Words Nearby no-brainer Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use no-brainer in a sentence

British Dictionary definitions for no-brainer


/ (ˌnəʊˈbreɪnə) /

  1. slang something which requires little or no mental effort

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

Cultural definitions for no-brainer


Something that is absurdly simple or easy and requires little thought: “Making pumpkin pie can be a no-brainer if you use frozen pastry and canned filling.”

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.