exclusionism noun2 •The quality of being exclusionist.But go anywhere else in the Middle East and Zionism stands for theft, oppression, racist exclusionism. — 2009 •A policy or ideology that favors exclusion of some individuals or groups from a nation, sect, etc.The true explanation of the rise of the traditional policy we believe to be commercial jealousy, which blossomed and burgeoned out into religious exclusionism. — 1859 formsexclusionisms