banishment
1. [ noun ] the state of being banished or ostracized (excluded from society by general consent)
Synonyms: coventry ostracism
Examples:

"the association should get rid of its elderly members--not by euthanasia, of course, but by Coventry"

Related terms: exclusion banish ostracize
2. [ noun ] rejection by means of an act of banishing or proscribing someone
Synonyms: proscription
Related terms: rejection ejection exile excommunication disbarment rustication relegation anathematisation forbid