The crossword solution for the term 'Royal Supporter' is 'LIEGE', which is a five-letter word. LIEGE is a term used to describe someone who is loyal and devoted to a monarch or ruler, and is often used in a feudal context. A LIEGE is expected to provide support and assistance to their ruler, and is usually bound by an oath of fealty. In modern times, the term is still used to refer to someone who is a strong supporter of a monarch or ruler.