cliquish

基本解释

Cliquish, judgmental, and/or stuck up people annoy the hell out of me.
搞小集團的、主觀的或傲慢的人會惹惱我。
The real worry is over Mr Orban’s headstrong ways and cliquish habits.
真正需要擔心的是奧班先生剛愎自用，結黨營私的習性。
Pigs can also be cliquish: an older new arrival may not easily find acceptance.
豬也可以自成一個小集躰：一個新來的可能不被接受。

It is well known that boards of directors form a rather cliquish corporate elite.
FORBES: Boards and fraud - who gets the sack and who gets to stay?
The twenties, possibly alone among the middle decades of life, are passionately celebrated in fiction and memoirs, and the celebrations tend to share a style that is personal, specific, cliquish, pastiched, breathless, often bibulous, and flagrantly confessional—the voice of early mastery without mature constraint, self-discovery at a moment when each revelation seems unique.
NEWYORKER: Semi-Charmed Life

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