Versed
来自Big Physics
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early 17th century: from French versé or Latin versatus, past participle of versari ‘be engaged in’.
wiktionary
etymonline
versed (adj.)
"practiced, conversant, acquainted," c. 1600, from past participle of obsolete verse "to turn over" (a book, subject, etc.) in study or investigation, from French verser "to turn, revolve" as in meditation (12c.), from Latin versare "be employed, busy oneself," literally "to turn to, turn often; think over," frequentative of vertere "to turn" (from PIE root *wer- (2) "to turn, bend").
