Resonance amplifies meaning through vibrational aftereffects, like repeated motifs echoing; it appears in Keats's odes to sustain mood, evoke universality, and deepen impact, a core device for memorable, immersive poetic experiences.

Resonance describes the lingering emotional, thematic, or acoustic after-effect created by a poem's imagery, sound patterns, or structural choices, where meaning and feeling continue vibrating beyond immediate comprehension. Unlike simple memorability, resonance involves how elements interact to create sustained impact—poems resonate when readers continue experiencing their effects long after reading. Acoustic resonance emerges from sound patterns (alliteration, assonance, rhyme) that create echo chambers within the text. Thematic resonance occurs when images, symbols, or ideas recur with variations, accumulating significance. Emotional resonance describes how poems affect readers beyond intellectual understanding, working through sound and rhythm as much as meaning. Poets create resonance through strategic repetition, carefully controlled sound, and structural design that allows elements to echo each other. Understanding resonance requires attention to how poems work holistically—how all elements contribute to overall effect. Students should examine what makes particular poems continue resonating after reading—which elements linger and why? The concept helps explain poetry's unique power to affect readers through means beyond paraphrasable content, working instead through formal and sonic properties that create lasting emotional and imaginative impact.