The term BE RAPID can be broken down into four crossword solutions: TRANSIT (7 letters), PRESTO (6 letters), HOTBED (6 letters), and MOSSO (5 letters). TRANSIT is a mode of transportation, such as a bus or train, that carries passengers from one place to another. PRESTO is a type of fare payment system used by public TRANSIT systems in Canada and the United States. HOTBED is an environment that encourages the rapid growth or development of something. Finally, MOSSO is a type of cycling technique used to quickly accelerate and climb hills.