The opposite of being a team is to be an individualist, where one is focused on personal gains rather than working towards a common goal. It can also be referred to as being alone, where there is no collaboration or cooperation. Another antonym for being a team could be dysfunctional, where there is a lack of communication or trust amongst team members. Similarly, being competitive, combative, or confrontational can also be seen as the opposite of being team-oriented. In short, being team involves working together towards a shared goal and celebrating collective victories, while its antonyms focus on individual achievements or negative interactions amongst team members.