" cacophonous "

 [ "cacophone" ]

1: An instrument that plays a dreadful, harsh tone; derived from the word cacophony.

  * e.g.,  ... When John played his cacophone, the shrieks, moans, and groans emitted from the room weren't just from the audience members... 

 [ "Cacophonous" ]

1: A loud, harsh, or discordant mixture of noise. Additionally, Matthew Mercer's favorite descriptor for a loud noise, specifically when on Critical Role.

  * e.g.,  ... Percy let's out a shot with bad news and with a cacophonous boom it echoes through the mines of Kraghammer. 

 [ "Cacophonize" ]

1: to create, or to cause to be created, discordant or harsh sounds, typically at a high decibel level

  * e.g.,  ... Right now it isn’t raining but it is rather windy. Once in a while, a big gust will disturb a roost of Common Mynas at the top of a nearby palm tree and they’ll cacophonize for a while. 

 [ "Cacophonicality" ]

1: The quality of a seemingly intellectual person's constant hankering for complexing simple stuffs , and in that process making people feel boredom .

  * e.g.,  ... Simon always uses big words to sound smart , but actually he's superficial and one day his cacophonicality will be disclosed in front of everyone . 

 [ "Cacophonous" ]

1: Having a harsh or discordant sound.

  * e.g.,  ... “Maybe she had sat here in the cacophonous darkness and felt some kind of desperation take her over.”