Related words are velocity, rapidity, and celerity which is proper velocity. High tech innovations arrived with dizzying rapidity. In retrospect, the rapidity of infrastructure reconstruction appears astonishing. He dispatched cases with unprecedented rapidity. The revolt spread northwards with great rapidity. As death approaches, the convulsions follow one another with increased rapidity, severity, and duration. Many, for the sake of simplicity and rapidity of fire, dispensed with adjustable propellant charges. However, there seems to be no impression of speed or rapidity for internal processes. Meals do not have an influence on the rapidity and extent of absorption. She oscillates between abused sexual slave and the epitome of self-assertion with schizophrenic rapidity. The liberation of heat with insufficient rapidity will not cause an explosion. Then every inertial frame of reference has a rapidity and a simultaneous hyperplane. The major advantage of this test is its rapidity and ease of use. Automated, potentially lossless digital technologies allowed vast increases in the rapidity of information growth. With the increasing rapidity of discovery, these are now six-figure numbers.