The term 'PREFIX WITH LIBERAL' can be solved by two crossword solutions: ULTRA (5 letters) and NEO (3 letters). ULTRA is a Latin prefix meaning 'BEYOND' or 'EXCEEDING', while Neo is a Greek prefix meaning 'NEW'. Both terms are used to describe something that is more liberal than the norm. For example, an ULTRA-liberal politician would be someone who is more liberal than most other politicians, while a neo-liberal politician would be someone who has adopted NEW, more liberal policies.