Sunbathe is a term that describes the act of lying in the sun, typically with the intention of getting a tan. However, there are several other words that can be used to describe this activity. Bask is a synonym for sunbathe, which implies a sense of enjoyment or relaxation. Another synonym for sunbathe is lounge, which suggests a more leisurely or lazy approach to lying in the sun. Roast is another possible synonym, but it has a more negative connotation and may imply discomfort or even pain. Ultimately, which synonym is used will depend on the context and the intended tone of the sentence.