a leg to stand on


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a leg to stand on

Proof, defense, or support for one's argument or position. Often used in the negative to mean the opposite. The senator's company avoided paying millions in taxes over the years, so she doesn't have a leg to stand on when she criticizes tax dodgers. The truth is that the prosecution hasn't got a leg to stand on, now that their key witness was discredited in court.
See also: leg, on, stand
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

a leg to stand on

Slang
A justifiable or logical basis for defense; support: He doesn't have a leg to stand on in this debate.
See also: leg, on, stand
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.
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