The underlined word "opinionated" in this context refers to someone who is stubbornly holding onto their own opinions and is not easily swayed or convinced by others. Therefore, the opposite of "opinionated" would be someone who is more open-minded and willing to consider different perspectives. "Objective" refers to being impartial, fair, and open to considering different viewpoints, which contrasts with the stubbornness or closed-mindedness associated with being "opinionated."