least of all

least of all idiom
Especially not. For example, No one cared, least of all the manager, or None of them will attend, least of all Jim. [Late 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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