Idiom: Let Sleeping Dogs Lie

avoid stirring up trouble

Examples

• Let sleeping dogs lie.

Key rules

• Let sleeping dogs lie means do not disturb a situation that is currently calm
• It is used to advise against raising old problems
• It is usually used with "let" and an imperative or "it's best to"
• The phrase keeps "sleeping", not "sleep"

Common mistakes

• Let sleep dogs lie → Let sleeping dogs lie