You can describe a loud, unpleasant mixture of sounds as a cacophony.
All around was bubbling a cacophony of voices. [+ of]
Synonyms: discord, racket, din, dissonance More Synonyms of cacophony
cacophony in British English
(kəˈkɒfənɪ)
nounWord forms: plural-nies
1.
harsh discordant sound; dissonance
2.
the use of unharmonious or dissonant speech sounds in language
Compare euphony
cacophony in American English
(kəˈkɑfəni)
nounWord forms: pluralcaˈcophonies
harsh, jarring sound; dissonance
Derived forms
cacophonous (caˈcophonous) (kəˈkɑfənəs)
adjective
cacophonously (caˈcophonously)
adverb
Word origin
prob. via Fr cacophonie < ML cacophonia < Gr kakophōnia < kakophōnos, harsh-sounding < kakos, bad, evil + phōnē, voice: see phono-
Examples of 'cacophony' in a sentence
cacophony
Much of it takes place in pitch darkness to a cacophony of industrial noise.
Times, Sunday Times (2016)
I hear a cacophony of protest.
Times, Sunday Times (2008)
A blast of energy, a cacophony of sound.
Times, Sunday Times (2014)
Slowly, with a cacophony of noise and steam and crunching power, we pulled away.
Times, Sunday Times (2016)
Ethiopia's clogged capital uncovers a cacophony of sounds, smells and images.
Times, Sunday Times (2013)
The experience of reading it is bewildering at first, with no friendly narrator to hold your hand and just a cacophony of unidentified voices for company.
Times, Sunday Times (2015)
(noun)
Definition
harsh discordant sound
The whole place erupted in a cacophony of sound.
Synonyms
discord
racket
The racket went on past midnight.
din
They tried to make themselves heard over the din of the crowd.
dissonance
a jumble of silence and dissonance
disharmony
examples of disharmony within society
stridency
Additional synonyms
in the sense of din
Definition
a loud unpleasant confused noise
They tried to make themselves heard over the din of the crowd.