Idiom: Let Sleeping Dogs lie Posted on 25th May 201824th May 2018 by DoubleClick Let Sleeping Dogs lie: said to warn someone that do not disturb a situation as it is Example: We would be better to let sleeping dogs lie and not discuss any more. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Posted in Idiom and tagged Idiom L.