Source : Webster's Revised Unabridged Dictionary (1913)

Hubbub \Hub"bub\, n. [Cf. {Whoobub}, {Whoop}, {Hoop}, v. i.]
   A loud noise of many confused voices; a tumult; uproar.
   --Milton.

         This hubbub of unmeaning words.          --Macaulay.

Source : WordNet®

hubbub
     n : loud confused noise from many sources [syn: {uproar}, {brouhaha},
          {katzenjammer}]