The antonyms for the term "most high-income" would essentially refer to individuals or households with the lowest income. This would include terms such as low-income, poverty-stricken, needy, destitute, impoverished, and underprivileged. While most high-income earners are typically associated with affluence, luxury, and financial stability, the antonyms suggest individuals who may struggle with basic necessities such as food, shelter, education, and healthcare. The antonyms remind us of the income disparity that exists in society and the need for policies and initiatives that tackle poverty and inequality.