su·ba·nun \süˈbäˌnün\noun (pluralsubanunorsubanuns) Usage: usually capitalized Etymology: Cebuan, from Subanun Subanen, from subà upstream + -nen people, language 1. a.: any of the pagan peoples on the Zamboanga peninsula of western Mindanao, Philippines b.: a member of such people 2.: the Austronesian language of the Subanun peoples