dreamless

The rest of the night was about as memorable as a dreamless sleep.

And while standing horses can achieve "slow-wave," or deep, dreamless sleep, but an adequately rested horse requires at least 25 minutes of REM sleep per day, which can only happen while lying down, Matlock said.

In spite of everything, she fell into a deep, dreamless sleep and woke long after the sun had lifted from the edge of the lake.

But, he added, “they have not been anesthetized by mediocrity into dreamless boredom.”

In the first half of the night, when fairly high levels of alcohol are still coursing through your bloodstream, you’ll probably sleep deeply and dreamlessly.