Decibelic 

Something that is very loud, any sound that is voluminous, i.e. has lots of volume. We measure sound using units known as decibels. A decibel is one-tenth of a bel, which represents a logarithm of a ratio. For instance, a jet engine is about 120 decibels. It is therefore decibelic.

Dude, this concert is so decibelic, I think I'm gonna have to go outside before I go deaf!

Decibelic by Cyberhog January 31, 2018

decibel 

A unit for expressing the intensity of sound. Also known as 'dB'

My subwoofer is at 2.12 decibels out of a possible 30.00 decibels, and still the neighbors are complaining.

decibel by nyiddle January 7, 2006

Decibelitis

A condition where someone can't or won't control the loudness of his/her voice.

I can hear that dude from five miles away - he has a bad case of decibelitis

Decibelitis by atomsmasher August 27, 2012

Decibel America 

Decibel America is the culture in America consisting of "loud activites" Such as: Nascar racing, demolition derbies, monster-trucks and other motorsports. One can also include activites such as gun events etc. The term Decibel America is often associated with rednecks.

Me and David are going to USA this summer to get a taste of the good ole' Decibel America.

Decibel America by TheRatchet May 9, 2009

Decibels 

When someone is getting loud, sassy or mouthy.

Somone raises their voice at you and you respond:

"Hey, you better check your decibels!"

Decibels by psufreak October 6, 2009

Decibel Democracy 

A meeting that arrives at a decision based on the opinions of the person who speaks (or shouts) the loudest regardless of whether they are correct.

It was a decibel democracy, Andy shouted everyone else down.

Decibel Democracy by eurous November 21, 2010

Neanderthalis Decibelus 

A type of loser.
Specifically a loser with a compunction to force EVERYONE to listen to their crappy taste in music, often using a lame stereo system.

If that Neanderthalis Decibelus doesn't turn his volume down I swear I'm gonna shove that boombox up his rectum.

Neanderthalis Decibelus by @pop_art July 28, 2009