Cacophony

“Cacophony (noun): Disagreeable or jarring sound; aural infelicity; discordance; babble or tumult. Adj. cacophonous; adv. cacophonously.

‘And always with an air of vast importance, always in the longest words possible, always in the most cacophonous English that even a professor ever wrote.’ H.L. Mencken, Prejudices: First Series”

Excerpted from: Grambs, David. The Random House Dictionary for Writers and Readers. New York: Random House, 1990.