The term "in-crowd" signifies a group of individuals who are popular, influential, and tightly-knit. Antonyms for this word may refer to people who are excluded, unpopular, or ostracized from mainstream society. These could be individuals who are seen as outcasts, loners, or rebels. Other antonyms for "in-crowd" could include terms like "outsiders," "dissenters," or "mavericks." These are individuals who are typically non-conformist and may have an independent streak. These antonyms suggest that not everyone is interested in joining the "in-crowd," and that there are other ways to be successful, influential, or happy without relying on popular approval or societal norms.