let sleeping dogs lie
B2CEFR level
34/100Rarity: fairly common
NeutralRegister
To avoid interfering in a situation that is currently causing no trouble, in case doing so makes things worse.
The old dispute has finally died down, so it's best to let sleeping dogs lie.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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