Scala Decima Inversa

Dec 8, 2025 | Invented Forms, Poetry

In May, I invented a new form I called the Scala Decima. Yesterday, I thought it might be fun to introduce its mirror twin, the Scala Decima Inversa. The rules are simple: Go down the staircase backwards.

  • 10 lines;
  • 10 syllables per line (iambic pentameter if you can manage it);
  • rhyme on syllable that corresponds to the last line number (i.e., the tenth syllable of the first line sets the rhyme; ninth syllable of second line, eighth syllable of third line, seventh syllable of fourth line, and so on continue it);
  • the rhyming syllable can occur anywhere within a word and need not be the whole word.

City Noise

An example of the Scala Decima Inversa poetry form. This was harder than I expected it to be, and not a pleasure to write. But I would never want to ask or suggest you try a thing I wasn’t willing to do, myself. Good luck with this.

Warm, gentle rain that muffles city streets
below - incessant hustle, noise. E-train's
on time. A whoosh, a thousand feet rush in,
soles clattering on concrete, rising din
a contrapuntal beat reverberates
on iron tracks. Heat rises, industry
goes on, replete with tired workers, faceless,
like Magritte's "The Son of Man," they dare not take
a beat to rest, for families like theirs 
eat food to live, while factories live to eat.

E-train’s a bit of a cheat, here, but it fit the theme. That’s the thing – knowing when to intentionally sacrifice a “rule” to make the thing work at all.

“Factories” is technically one syllable too long, but do we say “fac-to-ries” or “fact-ries”? Elision is a time-honored (some would say time-worn) poetic device; if I were living in the 18th or 19th century, I might’ve written “fact’ries” but James Matthew Wilson suggests modern poets avoid marking elision and trust the reader to read the line as intended. So I am trusting you, dear Reader, to read it as “fact’ries.”


As an experiment, I fed the rules to ChatGPT to see if AI is a serious threat to human poets, yet. I’ll let you be the judge. I’ll give it this – it followed the rules.

The hush of evening gathers growing LIGHT
We drift along by night to find LIGHT there
Soft whispers rise as hopes now LIGHTen souls
In dusk we stand and breathe LIGHT near night’s end
Under summer soft LIGHT we walk at peace
We move through dark LIGHT and trust the still air
The stars grow LIGHT as shadows slip beyond
At dawn LIGHT pours gently over the hills
In LIGHT we trust the waning night to fade
LIGHT we rise to greet the calm renewed day

Your Turn!

Try your hand at writing a poem in the Scala Decima Inversa form. Can you write one that’s better than ChatGPT’s? (C’mon, you know you can!) Feel free to post it in the comments or leave a comment with a link to where we can find your poem.

Holly Jahangiri

Holly Jahangiri is the author of Trockle, illustrated by Jordan Vinyard; A Puppy, Not a Guppy, illustrated by Ryan Shaw; and the newest release: A New Leaf for Lyle, illustrated by Carrie Salazar. She draws inspiration from her family, from her own childhood adventures (some of which only happened in her overactive imagination), and from readers both young and young-at-heart. She lives in Houston, Texas, with her husband, J.J., whose love and encouragement make writing books twice the fun.

3 Comments

  1. Mitchell Allen

    This was as complicated as you warned! I quickly learned that iambic pentameter is practically impossible, because your rules require the stressed syllable to change on each line, if also attempting to stick to the style of Shakespeare’s Sonnet 18.

    I decided to go with a theme and have fun that way. Here is my poem:

    https://morphodesigns.com/sand-between-your-ears/

    Thanks for sharing this challenge!

    Cheers,

    Mitch

    Reply
    • Holly J

      A good choice! And a wise plea at the end. It would be interesting to explore the human fascination with not just the idea, but the attempt to bring it to fruition, of creating a simulacrum of ourselves that might render us superfluous once and for all.

      Reply
      • Mitchell Allen

        And yet, the irony: the simulacrum will create life in a petri dish and reboot the cycle.

        I can actually imagine this! AI has been helping us create new materials, both organic and inorganic. Would our fictitious overlords do a better job than our “parents”, Nature and Evolution?

        Cheers,

        Mitch

        Reply

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