There are several synonyms for the word "lazy-bone" that can be used to describe a person who is generally lazy or unwilling to do work. Some of the common synonyms include slacker, loafer, idler, idle person, sluggard, couch potato, and layabout. These words can be used to describe a person who lacks energy and motivation, and prefers to spend most of their time doing nothing productive. While these words have similar meanings, they can be used to convey different levels of laziness or idleness. For example, a slacker may occasionally do work, whereas a sluggard is someone who is habitually lazy.