Polytonality in poetry refers to the simultaneous presence of multiple tonal registers, voices, or emotional frequencies within a single work—such as blending solemnity with irony, intimacy with detachment, or colloquial speech with elevated diction—creating a rich, often dissonant harmony that mirrors complex psychological or social realities; akin to musical polytonality (using multiple keys at once), this technique allows poets like T.S. Eliot in The Waste Land or Claudia Rankine to layer perspectives, critique ideologies, or express fractured identity without resolving into a single authoritative voice, thereby capturing the multiplicity of contemporary experience.

Use of multiple tonal registers or pitch patterns within a poem. Creates complexity through sonic layering. Related to polyrhythm. Common in modernist and experimental verse.