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

v expel from a community or group

ban, banish, blackball, cast out, ostracise, shun
Type of:
expel, kick out, throw out
force to leave or move out

v avoid speaking to or dealing with

“Ever since I spoke up, my colleagues ostracize me”
refuse to sponsor; refuse to do business with
Type of:
exclude, keep out, shut, shut out
prevent from entering; shut out

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