cacophony
Concise Oxford English Dictionary © 2008 Oxford University Press:
cacophony /kəˈkɒf(ə)ni/
▶noun (pl. cacophonies) a harsh discordant mixture of sounds.
– derivatives
cacophonous adjective.
cacophonous adjective.
– origin C17: from Fr. cacophonie, from Gk kakophōnia, from kakophōnos ‘ill-sounding’.
'cacophony' also found in these Oxford entries:

