Polysyllable

For instance, words can differ in length, and we can rhyme a monosyllable with a polysyllable, like tracks with haversacks.

In the Phyengan dialect, wuy developed into wi but at the end of a polysyllable it often dropped the -y to become wu (ibid): Tang-nakwu = Tang-nakwi 'donkey'

The third syllable of provided is ed, and therefore the verb is not a polysyllable.