Thought-provoking is an adjective used to describe something that encourages people to think deeply about a subject or issue. The crossword solutions for this term are DEEP (4 letters) and MEATY (5 letters). DEEP is often used to describe something that requires a lot of thought or consideration, while MEATY implies that the subject is substantial and has a lot of substance. Together, these two words provide a comprehensive description of the term thought-provoking.