Also found in: Thesaurus, Idioms.
Related to much less: Much less than
And certainly not: "Happiness is an emotion not often spoken of at the magazine, much less experienced" (Brendan Gill).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.