provincialist noun 2adjective 1forms 3 noun2 •One who lives in a province; a provincial.Walker's Pronouncing Dictionary is an excellent work, but perhaps it will be of service only to such men as I have alluded to before: the provincialist will mis-pronounce even his leading sounds. — 1809 •One who supports rights of self-determination by provinces. adjective1 •Supporting rights of self-determination by provinces. formsprovincialists · more provincialist · most provincialist