Give enough rope and he'll hang himself
Give someone enough rope and he'll hang himself
. Prov. If you give someone that you suspect of bad behavior the freedom to behave badly, eventually he or she will be caught and punished. Jill: I think Matilda's been stealing things out of my desk. Should I tell the boss? Jane: No; give her enough rope and she'll hang herself. One of these days she'll steal something important, the boss will find out for himself, and he'll fire her.