unversed

adjective

1. experienced; practiced; skilled; learned (usually followed by in): She was well versed in Greek and Latin.

adjective

1. (postpositive foll by in) thoroughly knowledgeable (about), acquainted (with), or skilled (in)

adj.“practiced,” c.1600, from past participle of obsolete verse “to turn over” (a book, subject, etc.) in study or investigation, from Middle French verser “to turn, revolve” as in meditation, from Latin versare “to busy oneself,” literally “to turn to” (see versus).