to make someone feel that they are not part of a group by being unfriendly towards that person, or to stop someone from being included in an arrangement or activity

I felt I was being frozen out of/from the discussions. 我感觉他们在排挤我，不让我参加讨论。

He believed that organizations like theirs were being frozen out. 他认为他们那一类的组织被排除在外了。