Rhyme Scheme
Quick answer: A rhyme scheme is the pattern of end rhymes in a poem, written as letters like ABAB or AABB. Learn common schemes and how to choose one that fits.
A rhyme scheme is the pattern in which end rhymes recur through a poem or stanza, conventionally written as letters: lines that rhyme with each other share a letter, so a stanza rhyming ABAB alternates two sounds, while AABB pairs them into couplets. The notation is just a map; the scheme itself is the architecture of expectation that the rhymes build as the poem unfolds.
Poets choose schemes the way builders choose frames. Couplets move fast and close each thought; alternating rhyme knits a stanza into one unit; an envelope such as ABBA holds a middle inside a frame. Recognising schemes helps you read forms like the sonnet or villanelle, and choosing one deliberately is often the first structural decision of a formal poem.
How It Works
Label the last word of each line, giving a new letter to each new sound. An invented quatrain: 'The kettle sang before the light (A) / the stairs complained beneath her feet (B) / she wrote his name, then wrote goodnight (A) / and posted nothing down the street (B).' That is ABAB, alternating rhyme, and you can feel how the second pair answers the first.
Different schemes create different speeds. AABB delivers its reward every two lines, which suits comedy and narrative. ABAB delays it, binding four lines together. ABBA delays it further and creates a sense of enclosure. Longer schemes, like the sonnet's, organise whole arguments: Shakespeare's ABAB CDCD EFEF GG stages three developments and a verdict.
Where You Will See It
Every named form carries its scheme like a signature. The Shakespearean sonnet ends on a couplet; the Petrarchan octave runs ABBAABBA; the ballad stanza rhymes ABCB; Dante's terza rima chains ABA BCB CDC through whole cantos; the limerick's AABBA is recognisable from the first line. Robert Frost's 'Stopping by Woods on a Snowy Evening' uses AABA stanzas whose stray B rhyme becomes the A of the next stanza, a quiet chain that pulls the reader downhill through the poem.
Free verse abandons schemes, but many contemporary poets use loose or partial schemes, letting rhymes surface irregularly so the reader senses order without being able to predict it.
How to Use It in Your Own Poems
Match the scheme to the poem's motion. Quick wit wants couplets; meditation suits enclosed or alternating rhyme; obsession suits repeating forms. Decide early, because a scheme chosen after drafting usually shows its seams. And be willing to loosen a scheme with slant rhymes when full rhyme starts to bully the sense.
If you enter a contest with a formal poem, keep the scheme consistent; judges reading for structure notice a pattern that breaks without purpose more than they notice its absence.
What poets can take from this
- Write the letters in the margin of any rhymed poem you admire; the map teaches faster than theory.
- Choose the scheme before you draft a formal poem, not after.
- Use couplets for speed and punch, alternating rhyme for cohesion, envelope rhyme for enclosure.
- Break a scheme only on purpose, and let the break coincide with a turn in meaning.
- Slant rhymes count as rhymes in a scheme; use them to relieve the pressure of full rhyme.
Try it yourself
Write the same eight-line poem twice: once as four couplets (AABB) and once as two alternating quatrains (ABAB). Keep the imagery identical where possible, then decide which architecture serves the subject and write a sentence explaining why.
Questions
How do I work out a poem's rhyme scheme?
Mark the final word of each line and assign letters: the first sound is A, and every later line that rhymes with it is also A; each new sound gets the next letter. The finished string of letters is the scheme.
Can a rhyme scheme change partway through a poem?
Yes, and the change is usually meaningful. Many poems shift scheme at a turn in the argument, as a sonnet does between octave and sestet. A shift with no purpose, though, tends to read as a lapse.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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