The term FAST-WILD can be summarized as a combination of two words, 'FAST' and 'WILD'. The first word, 'FAST', is used to describe something that moves quickly or is done quickly. The second word, 'WILD', is used to describe something that is unpredictable, chaotic, or uncontrolled. Together, the two words create an image of something that is both FAST and WILD, such as a roller coaster ride or a WILD animal. The crossword solution for this term is HECTIC, which means chaotic, frenzied, or disorderly.