speed; velocity; pace; velocity
acceleration; speeding up
high-speed; rapid; express; highway; freeway; expressway
great speed; extreme speed; swiftness
ultrahigh speed; ultrafast
news flash; prompt report; bulletin; quick announcement
speed per second; velocity per second; instant; moment; a few seconds
high speed; rapidity; rapid-service train (not as fast as express); rapid train
quick firing; rapid firing
double speed (data transfer, video playback, etc.); 2X speed; -times speed; ...X speed
speed of a pitched ball; (pitcher's) pace
detonation velocity; velocity of detonation; VOD; extreme speed; explosive speed
quickness; agility; activity
quick pace; quick steps; quick march; trot (horse gait)
walking speed; walking pace
rash decision; jumping to a conclusion
shifting gears; changing gears
quick battle for a quick victory; blitzkrieg
vehicle speed; speed of car
governor (device); speed regulator