/ kənˈvɜːsnt; NAmE -ˈvɜːrs-/ adjective
( formal ) ~ with sth knowing about sth; familiar with sth :
You need to become fully conversant with the company's procedures.
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WORD ORIGIN
Middle English : from Old French , present participle of converser , from Latin conversari keep company (with), from con- with + versare , frequentative of vertere to turn. The original sense was habitually spending time in a particular place or with a particular person .