It took him a lifetime to simmer down his business to just yes and no.
"Simmer down," he said, as he seated himself at the head of the table.
I thought it might simmer down; but it's broken bigger than I ever dreamed.
Kieran, on a camp-stool, waited for the laughter to simmer down.
Then with these before you, you can soon, by stating them and rearranging them, simmer down ...