(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.
Example Sentences:
(1) Just like Rees-Mogg, Johnson developed his public “Bojo” persona alongside a befuddled-looking Paul Merton, where he learned that looking dim but cranking out the polysyllables was a winning combination.