The first known occurrence of the lexeme “postmodern” is in a fifth-century letter by an African pope, Gelasius I: “… post modernum, quod tantorum pontificum collectione …”
– J. Moorhead, “The Word modernus”, Latomus 65, 2 (2006), 425–33, here 426
Premodern postmodern
D. L. Dusenbury 