The term "affluent segment" refers to a group of people who have a high income or significant financial resources. However, if you are looking for synonyms to replace this term, you could consider words such as "wealthy class," "well-to-do population," "upper echelon," "high net-worth individuals," "privileged community," or "moneyed group." These words convey the same message of individuals who have a significant amount of wealth and are likely to have a high-quality lifestyle. When targeting this audience with marketing messages, businesses may use these synonyms to add variety and avoid repetition.