How to Write a Sonnet
In brief: Fourteen lines, one argument, one turn. The sonnet is a little machine for changing your mind in public.
The sonnet was born in thirteenth-century Italy, sharpened by Petrarch, and carried into English where Shakespeare gave it the shape most readers know: fourteen lines of iambic pentameter, rhymed in three quatrains and a closing couplet. For seven hundred years poets have used it for love, grief, protest and prayer, which tells you something important: the form is not a cage, it is an engine.
The soul of the sonnet is the volta, the turn. Somewhere, classically at line nine in the Italian form or at the final couplet in the English form, the poem pivots: but, yet, and yet, still. A sonnet sets up a situation, then turns to answer, complicate or overturn it. If you remember only one thing, remember this: a sonnet is an argument with a hinge.
The two great blueprints
The Italian, or Petrarchan, sonnet splits into an octave of eight lines rhymed ABBAABBA and a sestet of six lines, often CDECDE or CDCDCD. The octave presents a problem; the sestet responds. The turn sits between them like a doorway. This shape suits meditative subjects, where the poem needs room to brood before it resolves.
The English, or Shakespearean, sonnet runs ABAB CDCD EFEF GG: three quatrains that build the case step by step, then a couplet that lands the verdict. Because English is poorer in rhymes than Italian, this blueprint asks for seven rhyme sounds instead of four or five, which is kinder to the language. Its danger is the couplet, which can snap shut too neatly, like a fortune cookie. The best couplets complicate rather than summarize.
Both blueprints share the meter: iambic pentameter, five beats per line, da-DUM five times. You do not need to count on your fingers forever. Read your line aloud; if it sounds like natural speech leaning gently on five stresses, you are close enough. Perfect metronome regularity is actually a flaw; variation keeps the pulse alive.
Here is the pulse on one clean line: “the kettle sings before the house awakes.” Tap it out: the KET-tle SINGS be-FORE the HOUSE a-WAKES, five gentle drumbeats, ten syllables, and not one word rearranged from how you would say it across a table. That is the standard to hold. Beginners often build pentameter by counting syllables alone and end up with ten-syllable lines carrying three stresses or seven, which read as prose wearing a costume. Count the beats, not the letters, and let the syllables look after themselves.
Build one, step by step
Begin with the turn, not the first line. Write one sentence for what the poem believes at the start, and one sentence for what it discovers by the end. If those two sentences are identical, you have a statement, not a sonnet. For example: start, “I keep rereading your letter because I miss you.” Turn: “Really I reread it because the person who wrote it no longer exists.” Now the poem has somewhere to go.
Draft the quatrains as prose first, one small scene or step of the argument per quatrain, then translate into lines of roughly ten syllables. Find your rhymes last, and let them be slant when exact rhyme forces you into nonsense: “thin” and “begin” is exact, but “love” and “enough” can be more honest. A natural line with a half rhyme beats a contorted line with a perfect one, every single time.
Finally, pressure-test the couplet or sestet. Does it merely repeat the quatrains in a bow tie, or does it add the one thing the reader did not see coming? Rewrite it until it surprises you, because if it does not surprise you, it will not surprise anyone.
Common pitfalls
Inversion is the classic trap: twisting word order to hit a rhyme, as in “his heart to her he gave.” Modern readers hear this as costume drama. Keep your syntax contemporary and conversational, and change the rhyme word instead of strangling the sentence.
The second trap is padding. Iambic pentameter tempts writers to stuff lines with “so very,” “indeed,” and “upon” just to reach ten syllables. Every filler word is a small leak in the boat. Cut it, then rebuild the line around a stronger verb. The third trap is skipping the volta altogether, producing fourteen pleasant lines that never turn. Readers may not know the word volta, but they feel its absence as flatness.
Try It: your first sonnet
Step one: write the hinge as two prose sentences before any verse exists. Belief: “I keep your number in my phone because I miss you.” Discovery: “I keep it because deleting it would make the ending real.” Those two sentences are the poem’s departure and arrival; everything else is the journey between them. Pin them above your desk.
Step two: build one quatrain from the belief, ABAB, keeping the syntax you would use in speech. For instance: “My phone still keeps your number on its screen, / as if deleting it would make things true. / I scroll past all the places we have been / and let the small blue light stand in for you.” Note the rhymes, screen with been and true with you, and note that nothing is inverted; each line could be said aloud to a friend without embarrassment. Draft two more quatrains the same way, each one a further step of the argument: what you do with the number, what you tell yourself about it.
Step three: land the discovery in the couplet. “I do not keep the number out of love; / I keep it so the ending stays unproved.” That is a slant rhyme, love against unproved, and it is allowed; honesty outranks chime. Check the whole poem against your two pinned sentences: if the couplet still says the belief instead of the discovery, the volta has not happened yet, and that, not the meter, is what to fix first.
Make it your own
Sonnets today are written about grandmothers, cricket matches, migration and mobile phones, in slant rhyme, in loose pentameter, sometimes with no rhyme at all but the fourteen-line argument intact. The form has always modernized itself; your job is to keep the hinge and let everything else flex.
Because the sonnet displays structure so openly, it performs beautifully in competition. In a monthly contest like Writory, where every poem is scored on creativity, emotion, structure, language and theme, a well-turned sonnet practically hands the structure marks to the judges, and its volta is a gift to the emotion score. Write one, polish the turn, and send it out.
An opening quatrain (ABAB, iambic pentameter)
I kept your letter folded in my sleeve,
and read it where the winter light was thin,
as though the folded page could still believe,
as though the ending waited to begin.
Alternating rhyme (sleeve, thin, believe, begin) with the repeated “as though” building pressure toward a turn.
A closing couplet that complicates
So love is not the blaze but banked-in coal,
a quiet heat that keeps the winter whole.
The couplet does not summarize the poem; it revises the reader’s idea of love in a single image.
Exercises
- Write your volta first: one sentence of belief, one sentence of discovery. Then draft a sonnet that travels between them.
- Take ten minutes and write a single quatrain in ABAB about something you did this morning, keeping the syntax as natural as speech.
- Find a sonnet you love, cover the last two lines, and write your own couplet. Compare and note what the original does differently.
- Rewrite one of your free verse poems as an English sonnet. Notice what the form forces you to cut and what it forces you to find.
Key takeaways
- A sonnet is fourteen lines built around one turn, the volta.
- Choose your blueprint: Italian octave-plus-sestet or English quatrains-plus-couplet.
- Write the turn first; the rest of the poem exists to earn it.
- Prefer natural speech with slant rhyme over twisted syntax with exact rhyme.
- A couplet should complicate the poem, not gift-wrap it.
Related lessons
Part of Forms of Poetry in the free Writory Academy: about 12 minutes, Intermediate level, with a quiz that counts toward a signed certificate on the Certificate Track. By the Writory editorial team. Updated July 2026.