Noisy confusion of voices (5)
I believe the answer is:
babel
'noisy confusion of voices' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for babel that I've seen before include "pandemonium" , "Confusion of sounds" , "Tower built by Noah's descendants to reach to heaven" , "Place of cacophony" , "Noisy confusion of voices" .)