enough rope, give someone

give (someone) enough rope

If you give someone the opportunity to do something wrong or detrimental to themselves, they will usually do it; one does not need to interfere to bring about someone's downfall. The full version is "Give one enough rope, and one will hang oneself." Don't interrupt him with questions. Just let him keep talking and he'll incriminate himself. Give him enough rope and see what happens.
See also: enough, give, rope
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

enough rope, give someone

Allow someone to continue on a course and then suffer its consequences. For example, The auditor knew something was wrong but decided to give the chief accountant enough rope . This expression, a shortening of enough rope to hang oneself, was already proverbial in John Ray's English Proverbs (1678).
See also: enough, give, someone
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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