The term 'pass rapidly' can be represented by two crossword solutions, 'FLY' and 'FLEET'. 'FLY' is a verb meaning to move through the air using wings or other means of propulsion. It is often used to refer to the movement of birds, insects, and airplanes. 'FLEET' is an adjective meaning moving quickly or swiftly. It is often used to describe a group of ships or vehicles moving together at a high speed. Together, these two words represent the idea of passing rapidly.