before vowels mult-, word-forming element meaning "many, many times, much," from combining form of Latin multus "much, many," from PIE *ml-to-, from root *mel- (2) "strong, great, numerous." It was much-used in forming Latin compounds in classical times and after (such as multianimis "having much courage," multibibus "much-drinking," multicomus "having much hair," multiloquus "talkative"). Many English words that use it (multinational, etc.) are 20c. coinages.
1640s, "busy" (with something), from Latin versantem (nominative versans), present participle of versare, literally "to turn often," frequentative of vertere "to turn," from PIE root *wer- (2) "to turn, bend." Meaning "familiar, acquainted" is from 1787.
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<a href="https://www.etymonline.com/word/multiversant">Etymology of multiversant by etymonline</a>
Harper, D. (n.d.). Etymology of multiversant. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/multiversant