The term 'A RIVAL' can be solved by two crossword solutions: ANGEL (5 letters) and RANGER (6 letters). ANGEL is a term used to describe a spiritual being, usually associated with Christianity. It is often used to refer to a messenger of God or a guardian ANGEL. RANGER is a term used to describe a person who is employed to protect and manage a natural area, such as a national park. Both terms can be used to describe someone who is a rival or competitor to another person.