The phrase "most have-not" refers to the group of people who do not possess certain privileges, resources or opportunities. The antonyms for this term could be "most haves," which could refer to the group of people who are privileged and possess a large number of resources or opportunities. Other antonyms could include "elite," "powerful," "privileged," or "affluent." These terms describe people who have access to superior privileges, support, opportunities, and resources. The antonyms for "most have-not" highlight the stark contrast between the advantaged and disadvantaged classes of society, indicating the divisions that exist between people based on their status, wealth, and access to resources.