The phrase "be on team" implies cooperation, collaboration, and shared goals. However, there are many antonyms that flip this concept on its head by emphasizing individualism, competition, and conflicting objectives. For instance, "go it alone" suggests that a person prefers to work independently and solve problems without the help of others. "Solo effort" conveys a similar sentiment, implying that a person is reliant solely on themselves to achieve success. "Opponent" and "rival" suggest an adversarial relationship where the goal is to defeat the other party. In contrast to being on a team, these antonyms highlight the importance of individualism and self-reliance.