The term 'SUPPORTER's answer' can be summarized by two crossword solutions: YEA (3 letters) and AYE (3 letters). Both of these words are used to express agreement or approval, and are often used as a response to a question or statement. YEA is an informal way of saying yes, while AYE is a more formal version of the same sentiment. Both words are used in many contexts, from casual conversations to formal meetings.