Sleep-drowned is a term that describes a person or object that is submerged in deep sleep. However, there are numerous synonyms that can be used to articulate the same concept. For example, the phrase "Sound asleep" could be used, as it suggests a deep and peaceful slumber. "In a trance," "knocked out," and "dead to the world" are additional phrases that can imply an individual or object in a profound sleep. The phrase "sunk in sleep" suggests an individual who has been enveloped in sleep for an extended period, while "sawing logs" is a term for someone who is snoring loudly. Overall, there are plenty of synonyms available to replace the phrase "sleep-drowned".