The antonyms for the word "more upperclass" would be "lower class" or "working class." These terms refer to social classes that have less wealth, education, and social status than the upper class. While the upper class is often associated with luxury and privilege, the lower class is often associated with poverty and struggle. The social hierarchy can be complex and fluid, with individuals moving between classes based on factors such as income, education, and occupation. Antonyms of "more upperclass" serve to highlight the contrast between different segments of society and the disparities in wealth and opportunity that exist within them.