The phrase "most abed" is often used to describe someone who is sleeping or has gone to bed for the night. There are many synonyms for this phrase that can be used to add variety and depth to your writing. Some examples include "fast asleep," "in a deep slumber," "soundly sleeping," and "reposed." Other alternatives might include "snoozing," "resting," "dozing," or "slumbering." These synonyms are all great options for writers who want to capture the feeling of being asleep or the act of settling down for the night. Whether you're writing a novel, a poem, or a blog post, having a range of synonyms at your disposal can help you convey your message more effectively.