con·ver·sant 
(kən-vûrsənt, kŏnvər-)
(kən-vûrsənt, kŏnvər-)adj.
Familiar or knowledgeable, as by study or experience: conversant with medieval history.
[Middle English conversaunt, associated with, from Old French conversant, present participle of converser, to associate with, from Latin conversārī; see CONVERSE1.]
con·versant·ly adv.