The term 'HARD QUESTION' can be broken down into two crossword solutions: 'POSER' (5 letters) and 'HARD' (4 letters). A 'POSER' is a difficult question or problem, so the phrase 'HARD QUESTION' could be used to describe a particularly challenging inquiry. The word 'HARD' is often used to describe something that is difficult or requires a lot of effort. Therefore, the combination of these two words suggests a question that is difficult to answer or solve.