Based on Jiří Levý s concept of illusionist translation this study investigates the issue of dialogue translation in literary works. Supported Marcos Bagno s observation that not even cultivated people speak according to the rules of prescriptive grammar, this research endorses the notion that we live in a register diglossia. Since the 1970s, according to John Milton, the Brazilian publishing market has been more open to the principle of the verisimilitude effect when it comes to recreating characters direct speech in Portuguese — a statement that will be verified through the comparison of three Brazilian versions of The Adventures of Huckleberry Finn, by Mark Twain. Next, through the commented translation of excerpts from May We Be Forgiven, a novel by American writer A. M. Homes, we verify which orality markers are already accepted by the publishing market. Finally, this study also seeks new markers in descriptive grammars of standard spoken language.