Imaginative thought is the ability to think of new ideas and concepts. It involves creativity and the ability to come up with something that has not been thought of before. The term 'IDEA' is often used to describe this type of thinking, which is why it is the answer to the crossword puzzle. Imaginative thought can be used in many different areas, such as problem-solving, art, and literature. It is an important skill to have in order to come up with innovative solutions and products.