disaffiliate
Concise Oxford English Dictionary © 2008 Oxford University Press:
disaffiliate /ˌdɪsəˈfɪlɪeɪt/
▶verb (of an organization) end its affiliation with (a subsidiary group).
■ (of a subsidiary group) end its affiliation.
– derivatives
disaffiliation noun.
disaffiliation noun.
'disaffiliate' also found in these Oxford entries:

