Ostracize
/ˈɑːstrəsaɪz/ verb mediumTo deliberately exclude someone from a group or community.
After the scandal broke, his former teammates began to ostracize him at every practice.
Memory Trick
In ancient Athens, citizens voted to banish someone by scratching a name onto a broken pottery shard called an 'ostrakon' — to ostracize is to vote someone out of the group.