heavy sleeper

He was not a heavy sleeper, nor a long one, and never had been.

Well, it would do if I wasn't such a heavy sleeper.

Or like a Brex, they were all heavy sleepers, though he was sometimes the exception.

Do you know that he's not an exceptionally heavy sleeper?

He was a heavy sleeper and difficult to waken at the best of times.

I tried to rouse him, but he was a notoriously heavy sleeper.

I am not a very heavy sleeper, and the anxiety in my mind tended, no doubt, to make me even less so than usual.

A very heavy sleeper, he thought, and shook her again.

No soldier who wanted to live to get old could afford to be a heavy sleeper.

Or else she had become a heavy sleeper over the years.