What is the opposite of student?

There isn't one single perfect opposite of "student." It depends on the context. Here are a few possibilities:

* Teacher: This is a common and fitting opposite, as they are at opposite ends of the learning process.

* Educator: A broader term than teacher, encompassing various roles involved in teaching.

* Graduate: If you're contrasting someone currently studying with someone who has finished their studies.

* Employer/Employee (depending on context): If you are thinking about the student's role in the workforce.

The best opposite will depend on what aspect of "student" you want to contrast.