pedant (n.)

1580s, "schoolmaster," from Middle French pédant (1560s) or directly from Italian pedante, literally "teacher, schoolmaster," a word of uncertain origin, apparently an alteration of Late Latin paedagogantem (nominative paedagogans), present participle of paedagogare (see pedagogue). Meaning "person who trumpets minor points of learning, one who overrates learning or lays undue stress on exact knowledge of details or trifles as compared with large matters or general principles" is recorded by 1590s.