rapidity /rə-pidˈi-ti/ noun

rapˈidly adverb

rapˈidness noun

rapid dominance noun (military)

A strategy of launching an overwhelming attack at the start of a conflict in order to break the enemy's will to resist

rapid eye movement noun

The rapid movement of the eyes in unison behind closed lids that accompanies phases of sleep during which dreams are particularly vivid (abbrev REM)

rapid fire noun

The firing of guns, asking of questions, etc in quick succession

rapˈid-fire adjective