proletarianism UK /ˌpɹəʊlɪˈtɛəɹɪənɪzəm/US /ˌpɹoʊlɪˈtɛɹi.ənɪzəm/ noun4 •The state, quality, or condition of being a proletarian. •The political character and practice of the proletariat; advocacy or advancement of the proletariat’s interests. •A proletarian word or turn of phrase; a vulgarism.The scatological proletarianisms of Don Jonz reflect poorly on your heretofore high level of editorial standards. — 1973 •(rare) Proletarians regarded as a class; the proletariat. formsproletarianisms