Omnicidal 

Someone who believes in the destruction of all life.

The most despicable of people are usually omnicidal.

Omnicidal by Yuri Akihiko December 11, 2018

omnimitaly 

a new yorker that actively engages in playing socom 2, half of a team that made it to the top 20 gamebattles doubles ladder. this fellow now parties hard and has no regrets. props to my man.

I was writing a book, and the books called bitch! Makes me wanna fuck omnimitaly.

omnimitaly by mongolbeast December 10, 2008

Omnipedal 

A creature which can switch between bipedal and quadrupedal at will. such as; werewolves, some dinosaurs, and most apes.

Did you know that werewolves in Skyrim are omnipedal?

Omnipedal by Werewolf Scientist June 19, 2020

omnicide

the destruction of all life.

What will happen if George W. Bush is re-elected.

omnicide by The Ugly One April 24, 2004

Omnicide

The total destruction of all life.

The only good reason to kill yourself is to commit omnicide

Omnicide by amongtheomegas November 4, 2004

Omnicider

An Omnicider is one who has the urge to kill all around them, indiscrimate to the havoc and ruin they cause. This is a fitting term for the Suicide Bombers that seem to be prevalent these days, since that is their ultimate goal: To effect an act of Omnicide

And omnicider detonated themselves today, killing 7 and wounding 10.

Omnicider by Ironbrand April 30, 2006

omnicide

Modern Warfare 2:
Kill the whole enemy team within 10 seconds

I just killed the whole enemy team which is...........OMNICIDE

omnicide by An0nym0us_p3rs0n March 15, 2010