There are several synonyms for the word "thin-bodied" that can be used in various contexts. Some of these include lean, slender, skinny, slim, lanky, wiry, gaunt, emaciated, scrawny, and bony. These words can be used to describe a person's physical appearance, but can also be applied to animals or objects. For example, a "slender" tree trunk or a "lean" piece of meat. When writing, it's important to choose the right synonym that fits your specific context and conveys the intended meaning. Using synonyms can also add variety and depth to your writing, making it more interesting and engaging.