He wants to be able to sleep easily at night.

It seemed to him that he could easily sleep for a week.

But I want to be able to sleep easily in my bed at night.

I sleep easily, rising before ten the following morning, to post my letter.

Too much had happened today to let him get to sleep easily, his exhaustion notwithstanding.

"Let's say, I'm not quite at the point where this assignment allows me to sleep easily."

He seems to be sleeping easily now, so I'd say that's his normal temperature.

Finally they went to bed, but none slept easily or well.

"Oh great, I can go back to sleep easily now."

The word has gone that after your care he slept easily for the first time in months.