Conversant

Webster's Dictionary of the English Language

·adj Concerned; occupied.

II. Conversant ·noun One who converses with another; a convenser.

III. Conversant ·adj Having frequent or customary intercourse; familiary associated; intimately acquainted.

IV. Conversant ·adj Familiar or acquainted by use or study; well-informed; versed;

— generally used with with, sometimes with in.