ζωοποιεῖ [2 verses](3rd sg pres ind act) "Quickeneth" is from zoopoieo, which means "make alive", "endow with life," and "preserve with life."  --   "Quicken" is a verb that means "make alive", "endow with life," and "preserve with life." It is a compound verb, created from the word for "life" and the Greek word that means "to make," which most Bible translations translates a "to do." The word "life" also means "existence.