cooperativist adjective 1noun 1forms 3 adjective1 •Of or related to cooperativism.This global configuration of economic and class relations within the conglomerate structure of the Mondragon cooperatives is in deep tension with its cooperativist principles. — 2010 noun1 •An advocate of cooperativism.Quite often, cooperativists do not know even the name of their cooperative or where it is located. — 2009 formscooperativists · more cooperativist · most cooperativist