gnarus

Etymology
Ultimately from a, from the root. Cognate with Attic Classical Greek root aorist of γιγνώσκω ("I get to know"), ἔγνων (egnōn, "I got to know") and its participle form γνούς, γνοῦσα, γνόν (gnous, gnousa, gnon, "Having got to know")

Adjective

 * 1) Having knowledge of a thing; acquainted with a thing., skillful, practiced.