The term 'REMARKABLE ROOKIE' is a combination of two words, 'REMARKABLE' and 'ROOKIE'. The first word, 'REMARKABLE', means extraordinary or impressive. The second word, 'ROOKIE', refers to someone who is new to a particular job or activity. The crossword solution for this term is 'PHENOM', which is a slang term used to describe someone who is exceptionally talented or successful in their field. This term is often used to describe a young person who has achieved great success in a short period of time.