exclusive, confined to a small group; forming cliques.

What does it mean if something is pretentious?

a : making usually unjustified or excessive claims (as of value or standing) the pretentious fraud who assumes a love of culture that is alien to him— Richard Watts. b : expressive of affected, unwarranted, or exaggerated importance, worth, or stature pretentious language pretentious houses.

What does it mean when someone is cliquey?

If you describe a group of people or their behaviour as cliquey, you mean they spend their time only with other members of the group and seem unfriendly towards people who are not in the group. [disapproval]