The English Civil War Royalist was known as a CAVALIER, which is an 8-letter word. The term CAVALIER was used to describe the Royalists during the English Civil War (1642-1651). They were supporters of King Charles I and were opposed to the Parliamentarians, who wanted more power for Parliament. The Cavaliers were known for their loyalty to the King and their willingness to fight for him. They were also known for their extravagant lifestyle and fashion sense.