Rapidly means quickly, taking place at an accelerated rate.
While jogging keep tapping X rapidly and you should run for ages!!
Cowboys loved a colorful phrase! This meant to leave in a hurry, to walk or run quickly. You were pulling your feet off the ground rapidly.
It means fastest.
if you mean rapidly (note the spelling) it means 'quickly'
Growing rapidly in number.
A "run" is a sequence of notes played rapidly (typically 16th notes or faster) in an ascending or descending pattern. A chromatic run would be one in which most of the notes are along the chromatic scale--in other words, half-steps.
lope means to run in great strides and race is to run rapidly
Rapidly means happening quickly or at a fast pace. It suggests that something is moving or changing swiftly.
rapidly advancing periodontitis
increasing in mass at a great speed
It is used to say that something has spread rapidly, and is popular. I suppose the idea is that it is spreading like a virus - widely and rapidly.