If you banish someone or ignore him, you ostracize him. When the Iranian president claimed that the Holocaust was a hoax, he was ostracized by the international community.

Ostraka is an ancient Greek word for pottery shard. Thousands of years ago, in the Greek city of Athens, there was a public process where you would write the name of someone you wanted to kick out of town on a broken ceramic fragment. If enough Athenians wrote the same name, that person was sent away for ten years. This process was called an ostracism.

Definitions of ostracize
  1. verb
    expel from a community or group
    synonyms: ban, banish, blackball, cast out, ostracise, shun
    see moresee less
    type of:
    expel, kick out, throw out
    force to leave or move out
  2. verb
    avoid speaking to or dealing with
    “Ever since I spoke up, my colleagues ostracize me”
    synonyms: ostracise
    see moresee less
    refuse to sponsor; refuse to do business with
    type of:
    exclude, keep out, shut, shut out
    prevent from entering; shut out
Word Family

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