Polysyllable n. A word of many syllables, or consisting of more syllables than three; words of less than four syllables being called monosyllables, dissyllables, and trisyllables.
... replied Willoughby handsomely; and straightway the serene, appreciative expression of the bullock driver's face, rightly interpreted, showed that his mind was engaged in a Graeco-Roman conflict with the polysyllable, the latter ... — Such is Life • Joseph Furphy