The term "more upper-class" refers to a higher social status or elevated lifestyle. The antonyms for this phrase include words like common, low-born, plebeian, proletarian, and working-class. These words imply a lower social status or economic standing, often associated with having less wealth, education, or cultural refinement. While the term "more upper-class" suggests an exclusive and privileged lifestyle, its antonyms are often used negatively to suggest a lack of social status, prestige, or sophistication. In summary, the antonyms for "more upper-class" are associated with a lower social and economic status and a lack of cultural refinement.