B1the state of not being interrupted or annoyed by worry, problems, noise, or unwanted actions: You'll need peace and quiet to study.He says he's at peace when he's walking in the mountains.Go away and leave us to finish our dinner in peace.For everyone's peace of mind go back and check you locked the door.There'll be no peace until she gets what she wants.I didn't agree with what she said but I held my peace (= did not say anything).Peaceful and tranquil