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 a native of Fife, and in early life became versant in occult science.

From The Mysteries of All Nations Rise and Progress of Superstition, Laws Against and Trials of Witches, Ancient and Modern Delusions Together With Strange Customs, Fables, and Tales by James Grant

I expected a corresponding formation upon the opposite eastern versant: we found only a huge crest, a spine of black plutonic rock, intensely ugly and repulsive.

From The Land of Midian — Volume 2 by Sir Richard Francis Burton

Diaz calls the two last, Teuleticle and Teatical; but though his facts are fully more to be depended upon, Clavigero may be accounted better versant in Mexican orthography.--E.

From A General History and Collection of Voyages and Travels — Volume 04 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

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