in group
[noun]
Synonyms: clique, cabal, camarilla, camp, circle, clan, coterie, mafia, mob, ring

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Antonyms: outgroup

[TahlilGaran] English Synonym Dictionary ▲

ˈin-group noun [countable]
a small group of people involved in an organization or activity who like the same things and are friendly with each other, but do not want other people to join them Synonym : clique

[TahlilGaran] Dictionary of Contemporary English ▲