The antonyms for the word "unindustrialized" include developed, industrialized, advanced, modernized, sophisticated, urbanized, and progressed. These words signify the expansion and growth of a region or country in various sectors including technology, infrastructure, economy, and living standards. Developed countries have efficient industries that provide employment opportunities and contribute to the overall economic growth. With technological advancements and modernization, countries have achieved sophistication and standard of living, which are ahead of those in unindustrialized countries. Urbanization has led to the development of cities with state-of-the-art infrastructure and massive technological advancements, thereby improving the quality of life of citizens. In summary, antonyms for "unindustrialized" represent development, progress, modernization, sophistication, and urbanization.