late 13c., enquest, an-queste "legal or judicial inquiry," especially one before a jury, from Old French enqueste "inquiry" (Modern French enquête), from Vulgar Latin *inquaestia (source also of Italian inchiesta), from Latin inquisita (res) "(a thing) looked into; an inquiry," from fem. past participle of Latin inquirere "to seek after, search for" (see inquire). The form with in- prevailed from 18c.