serve
to help or work for someone or something
Root
- serv / serve: serve, service, or be in service
Other words with the serv / serve root
- service: help or work done for someone
- servile: excessively submissive or like a servant
- subservient: excessively submissive or serving under another
Serve is the plain hook for serv: doing work for another person or purpose.
The example served the student better than a longer definition.