This article brings together the concept of dialogue in the Bakhtinian sense and the concept of irony with the aim to show how irony emerges in texts as a result of the dialogic interaction of voices. Two issues are discussed: first, evaluation as a regular and ubiquitous component of discourse. The polyphonic structure of a text or an utterance can signal evaluative meaning; multivoicedness functions as a marker of the narrator’s stance, especially if the voices juxtapose or incohere with each other. Second, incoherence as the trigger of ironic interpretation. Incoherence can emerge as a result of the confrontation of voices in the texts. To create a misaligned polyphonic structure, writers employ various techniques, from direct quotation to free indirect discourse. This paper's intention is to show that ironic evaluation can be a reasonable explanation for the cacophonic interaction of voices in the polyphonic structure of the text.