to  let  sleeping dogs lie
let
lɛt
let
sleeping
sli:pɪng
sliping
dogs
dɒgz
dogz
lie
laɪ
lai

Definition & Meaning of "let sleeping dogs lie"in English

to let sleeping dogs lie
01

to ignore a situation, topic, issue, etc. so as not to cause troubles or difficulties 

to [let] sleeping dogs lie definition and meaning
Idiom
Informal

What is the origin of the idiom "use a sledgehammer to crack a nut" and when to use it?

The idiom "use a sledgehammer to crack a nut" has its roots in the world of construction tools. It describes a situation where someone employs a sledgehammer, a heavy and powerful tool, to perform a task that could be accomplished with a much lighter and simpler tool, like a small hammer. This idiom is used figuratively to criticize actions that are excessively forceful, extravagant, or complicated for a relatively simple problem or task.

Examples
I know you want to ask about the argument, but it's better to let sleeping dogs lie. 
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