enough rope, give someone

give (one) enough rope

If you give people 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 (one)self." 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

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