Real Dictionary

freeze out
phrasal verb: If you freeze someone out of an activity or situation, you prevent them from being involved in it by creating difficulties or by being unfriendly.

freeze out in American English
to die out through freezing, as plants
to exclude or compel (somebody) to withdraw from membership, acceptance, a position of influence or advantage, etc., by cold treatment or severe competition

freeze out in British English
verb: to force out or exclude, as by unfriendly behaviour, boycotting, etc