Which preposition to use with polysyllables

at Occurrences 1%

But my resources were not yet exhausted, and I hurled monosyllable, dissyllable, and polysyllable at their devoted heads, shouted "Akh!

by Occurrences 1%

A new pronunciation will make almost a new speech; and, therefore, since one great end of this undertaking is to fix the English language, care will be taken to determine the accentuation of all polysyllables by proper authorities, as it is one of those capricious phaenomena which cannot be easily reduced to rules.

Which preposition to use with  polysyllables