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Sonnet

Poetry & prosody

A fixed-form fourteen-line poem — closed by a final turn — in Petrarchan or Shakespearean arrangement.

Example

"Shall I compare thee to a summer's day?" — three quatrains, then the sealing couplet.

— Shakespeare, Sonnet 18

The sonnet is Western poetry's most durable fixed form: fourteen lines, arranged in the Petrarchan tradition as octave plus sestet, and in the Shakespearean as three quatrains plus a couplet. Rhyme schemes vary by tradition; what doesn't is the turn — the volta — that pivots the poem, and the pointed ending that crowns it.

Its structure is an argumentative mold as much as a metrical one: the opening sets (a scene, a case), the close disposes (reversal, widening, resolution). From Petrarch to Shakespeare's couplets to Rimbaud's "Le Dormeur du val," the constraint has never stopped proving fertile: fourteen lines, and everything must fit.

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