nonjoiner

/nɑnˈdʒɔɪnər/
noun
  1. A person who does not join groups, clubs, or organizations.
    • My uncle is a nonjoiner; he never signs up for any committees or clubs.
    • As a nonjoiner, she prefers to work alone rather than be part of a team.
    • The school tried to recruit him for the debate team, but he's a nonjoiner.
Antonyms
What does "nonjoiner" mean? | whatsthatwordmean | whatsthatwordmean