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

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 Robert Kerr

Little versant in their pursuits, though respectful to their genius, after mutual salutations, the divine passes on and pays an evening visit to his illustrious neighbor, Dr. Thomas Goodwin.

From The International Monthly Magazine, Volume 5, No. 1, January, 1852 by Various

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 Benjamin Disraeli, Earl of Beaconsfield

The Kayan or Bulungan river is the only other in the eastern versant that calls for mention.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" by Various