What is another word for in a sound sleep?
Pronunciation: [ɪn ɐ sˈa͡ʊnd slˈiːp] (IPA) 
The phrase "in a sound sleep" refers to a deep and restful state of slumber. There are numerous synonyms for this phrase, each with its unique connotations. Some of the most common equivalents include "in a peaceful slumber," "in a restful sleep," "in a deep slumber," "in a tranquil rest," "in a quiet rest," and "in a restorative slumber." All of these phrases evoke a sense of calm and serenity, suggesting an uninterrupted and rejuvenating sleep experience. Whether you use one of these synonyms or the original phrase, the sentiment remains the same: the person is sleeping deeply and soundly.
