dreamless
adj. 无梦的，不做梦的
例句
He fell into a deep dreamless sleep.
他酣然入睡，一夜无梦。
《柯林斯英汉双解大词典》
On this occasion, he had fallen at once into a dreamless sleep.
这一次，他立刻进入了无梦的睡眠。
I can picture being in dreamless sleep quite easily.
我能够轻而易举地想象无梦的睡眠。
