0 to avoid someone intentionally, or to prevent someone from taking part in the activities of a group: --
His colleagues ostracized him after he criticized the company in public.
1 to prevent someone from being part of a group because you dislike the person or disapprove of something the person has done: --
Society tends to ostracize the sufferer who is loath to admit or discuss the condition.
This feeling of the miners, that they are a class apart, segregated, exploited, ostracized, unfortunately, is no transient symptom.
Frankly, parents have been conditioned by a system which has virtually ostracized them for many years.
There is another important problem, which is how to prevent the sick from being ostracized.
Prominent in this connection was the decay of faith in earlier methods of retributive vengeance designed to eliminate the criminal offender, ostracize him, or permanently stigmatize him.
They were often ostracized by their community for having engaged in a relationship with a foreigner - even when often, it appears, it was done against her will.
Choosing whom she will marry against her parents' wishes, and expressing women's desire in her poetry, she is ostracized for violating her family's honor.
They become aware of it and ostracize a pronunciation only if it has become the linguistic badge of the disesteemed.