versant

A gadget lover, Alexander is known to roll up his sleeves to become versant with the latest security technologies.

From Reuters ● May 26, 2013

For this purpose, they gave orders to Diego Garcias de Alfaro, an inhabitant of Lima who was versant in maritime affairs, to repair and fit out the two barks which had drifted on shore.

From A General History and Collection of Voyages and Travels - Volume 05 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time by Kerr, Robert

The rivers of the northern versant, such as the Nera, are, like those of Asturias, for the most part short, rapid and subject to violent floods.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various

He was well versant in military affairs and took great delight in war, of which he endured the labours and privations with much patient fortitude.

From A General History and Collection of Voyages and Travels - Volume 05 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time by Kerr, Robert

Had they been more versant in the periodical literature of the day, they might in this 'slashing' style have caught perhaps a glimpse of the future candidate for their borough, the Right Honourable Nicholas Rigby.

From Coningsby by Disraeli, Benjamin, Earl of Beaconsfield