This essay proposes a new understanding of the widely recognized disdain for realism and the realist novel among decadent writers, a disdain most critics have interpreted as a protomodernist celebration of artifice. Focusing on Oscar Wilde's dialogue “The Decay of Lying,” the essay argues instead that decadent antirealism is antimodern, embodying a repudiation of contemporary society. Decadent writers regard realism not as hidebound and traditional, as twentieth-century theorists would have it, but as terrifyingly modern. Wilde looks back to neoclassical theories of mimesis and classical Republican political theory to imagine a different, older world, one in which art improves upon brute reality and in which the artist stands apart from the social forces that realist novels make central to their literary universes.