When it comes to finding the right words to describe a service provider, there are several great synonym options to choose from. One option is "vendor," which denotes a person or company that sells goods or services. Another possibility is "provider," which has a more general connotation and can be used to describe any individual or organization that offers a service. "Supplier" is another synonym that highlights the provider's role in delivering goods or services to customers. "Contractor" is a term often used to describe service providers in construction or contracting industries. Lastly, "professional" can be used to describe service providers who possess expertise in their chosen field. Ultimately, the right synonym will depend on the context and industry of the service provider being described.