Terza Rima Sonnet
Quick answer: Terza rima sonnet explained: the chained ABA BCB rhyme scheme inside fourteen lines, from Dante and Shelley to Frost, with steps to write your own.
Take the rhyme engine Dante built for the Divine Comedy, run it for fourteen lines, and you have a terza rima sonnet: four tercets whose rhymes interlock like pulled stitches, closed by a couplet. The scheme reads ABA BCB CDC DED EE. Each tercet plants a new sound in its middle line, and the next tercet grows from that seed, so the poem cannot help moving forward.
Shelley made the hybrid famous in 'Ode to the West Wind' (1819), which is five terza rima sonnets in a row. Robert Frost gave the form its best-known solitary example in 'Acquainted with the Night' (1928), a poem that walks its speaker through the dark on rhymes that keep handing him onward.
Two traditions in one
Terza rima itself dates from around 1308, when Dante began the Commedia in linked hendecasyllabic tercets, a scheme possibly adapted from the sirventes of the troubadours. The sonnet came from the same Italian century. Fusing them is mostly an English habit: Italian poets had little reason to trim their great chain to fourteen lines, but English poets liked the way the chain's momentum could be caged inside the sonnet's box. Shelley used the combination for prophecy and storm; Frost for insomnia and city streets; later poets have used it for anything that walks, drives, falls or flees.
The structure, precisely
The form is easy to memorise and demanding to fill.
How to write one
This is a form about motion, so start with a journey, literal or not: a walk, a descent, a memory chasing itself. Draft tercet by tercet, and each time you set a middle line, pause and check that its end word opens rhyming doors, because that word dictates the next tercet. Frost's night walker passes a watchman, hears a cry that is not for him, and looks up at the moon like a clock; notice how each tercet arrives somewhere slightly further on. When you reach the couplet, let it do what the chain cannot: stand still. A good terza rima sonnet ends like a walker stopping, both feet finally together. Writory's monthly contest is a decent testing ground for one, since judges score structure and momentum shows up instantly when a poem is read aloud.
Best subjects, common ruin
Journeys, pursuits, spirals of thought, weather, grief that loops: anything with forward motion suits the chained rhymes. Static description fights the form.
Beginners ruin it by ignoring the middle lines, treating them as filler between rhymes. The middle line is the engine: it names the sound the next stanza must grow from. Write your middle lines with the most care, not the least.
What poets can take from this
- Give the poem somewhere to go; the form punishes standing still.
- Check every middle line's end word for rhyming headroom before continuing.
- Keep the couplet for arrival, stillness or a clicked-shut door.
- Use slant rhyme when pure rhyme would force a silly word.
- Read 'Acquainted with the Night' and map its rhyme letters by hand once.
Try it yourself
Write a terza rima sonnet narrating a walk you take to avoid something waiting at home, and let the couplet decide whether you turn back.
Questions
What is the rhyme scheme of a terza rima sonnet?
ABA BCB CDC DED EE. Four interlocking tercets pass their middle rhyme to the next stanza, and a couplet on the final new sound closes the poem.
What is the most famous terza rima sonnet?
Robert Frost's 'Acquainted with the Night' is the best-known single example. Shelley's 'Ode to the West Wind' is built from five terza rima sonnets stacked into one ode.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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