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A rhyme scheme is the pattern of end-rhymes in a poem, conventionally labeled with letters (ABAB, AABB, ABCABC, etc.). Rhyme creates sonic unity, sets expectations, and — when broken — produces emphasis or surprise. End rhyme (matching sounds at line endings) is the most common type, but internal rhyme occurs within lines. The choice of rhyme scheme is a formal decision that shapes tone, pace, and the relationship between ideas across stanzas.
Label the end sounds of each line in a short poem before reading any analysis. Observe what ideas are paired by shared rhyme and whether the pattern is regular, surprising, or abandoned mid-poem.
You are already familiar with the sounds of language at the level of individual words and syllables. Rhyme scheme is the study of how those sounds are organized across the lines of a poem — the pattern they form when you step back from the words and listen for recurring endings.
The convention is simple: assign each new end-sound a new letter, and use the same letter whenever that sound returns. If a poem's first line ends in "night" and its third line ends in "flight," both get the letter A. If the second line ends in "rain" and the fourth in "plain," both get B — producing ABAB. The label AABB means the first two lines rhyme with each other and the second two rhyme with each other (couplets). The label ABBA means the outer lines rhyme and the inner lines rhyme (an envelope pattern). These are not arbitrary categories; each pattern produces a different sonic and structural effect. ABAB keeps the poem moving forward; ABBA creates a sense of enclosure or return.
What makes rhyme scheme analytically interesting is not the pattern itself but what it *does*. Rhyming words are linked sonically, and that sonic link invites you to consider whether they are also linked semantically or thematically. If "death" and "breath" rhyme, the poem is drawing your ear — and by extension your attention — to the relationship between those ideas. When rhyme pairs that seem to conflict ("love" / "enough") the friction is itself meaningful.
Slant rhyme — near-rhyme, where sounds are similar but not identical — is a sophisticated tool, not a failure of craftsmanship. Emily Dickinson built her entire body of work on slant rhyme, and the slight wrongness of her endings creates a persistent undercurrent of unease. When you analyze rhyme scheme, include slant rhyme and ask why the poet chose approximation over exactness.
Finally, pay attention to breaks in a pattern. If a poem maintains ABAB for five stanzas and then introduces an unrhymed line, that line is foregrounded by the violation. The word or image that breaks the pattern tends to carry unusual weight — it is the moment the poem refuses to deliver what it promised, and that refusal is itself a statement.
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