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Use "decasyllabic" in a sentence
"Whether fifty thousand words of prose action or fourteen decasyllabic lines of verse with a strict rhyme scheme, a genre is a list of the minimal conditions that a writer must meet."
"Debbie has some fine Augustan echoes: rolling decasyllabic lines though with impish breaks that propel semantic leaps, as in the first few lines!"
"Yes, at some point in my past, I decided to note the number of syllables you'd use for the word "Canterbury" in order to make the verse come out "properly" decasyllabic."