The word sub-served can be used when discussing something that has served or supported a larger purpose or goal. Synonyms for sub-served include assisted, aided, helped, contributed, facilitated, and furthered. Each of these words describes an action taken to promote or enhance a larger objective. For example, an employee who assists their boss with a project is sub-serving the company's goals. Another synonym for sub-served is secondary, which refers to something that is less important than the primary goal. Overall, sub-serving is an important aspect of working towards a larger goal and there are many words that can be used to describe this supportive role.