A person who believes that what is true or real is different for each person and depends on their thoughts and feelings.
Some people think being a subjectivist is good, and some people think it is bad.
Examples:
The subjectivist thinks that what is true for you might not be true for me.
She is a subjectivist because she thinks everyone's feelings are important.
The subjectivist believes that there are many truths, not just one.
The subjectivist says that if you think it's true, then it is true for you!
The subjectivist thinks that everyone's ideas are right.
The subjectivist says that what you feel is what is real.