Revengi 

The act of one taking dishonorable revenge on another, thus making them a "revengi" and being an untrustworthy
and a disliked individual amongst others

Chase: *attacks Mat*
Mat: *attempts to retaliate*
Chase: "Don't be a Revengi!"

Revengi by Karen Shakespeare November 30, 2019

Spite Monkey’s Revenge 

This is where some nasty little heale of a spite monkey usually a teenager or pre-teen has an idea for a definition for Urban Dictionary. They look it up and find your definition of ‘their’ word already in place and approved by a lot of people. True to the spite monkey mentality they immediately hit the thumbs down symbol, they then contact any like-minded losers they call friends and get them to do the same thing. They don’t bother trying to get their own definition accepted but boast about how they beat the fuck out of yours. It’s possible to hope that one day they will actually grow up, but unfortunately so many of them will remain nothing more than disagreeable little snot splatters for their entire lives.

“My latest definition on Urban Dictionary has picked up loads of dislikes, I don’t understand why.”
“It’s the spite monkey’s revenge, mate. Some little turd reckons you nicked their definition and this is a way of getting back at you.”

Spite Monkey’s Revenge by AKACroatalin June 27, 2015

revengicide 

1. A risky act of revenge, committed because the need for revenge is greater than the need for self-preservation.
2. Something you do to get back at someone, even though you know that it will be damaging to you in the end.

Marion: Our organization has an intern working at the White House!
Rob: I hope her name isn't Monica.
Marion: Not to worry, it's a guy.
Scott: Don't forget Hillary! She's probably up for a little political revengicide!

revengicide by ocius1 May 15, 2009

Drinking for revenge 

Drinking for revenge is a toast used by people known for their excessive use of alcohol. It’s the intake equivalent of whistling past a graveyard as though the rules of the tombstone don’t apply to you. The entire toast goes:

Dinking killed my mother; drinking killed my father; so I’m drinking for revenge!

Drinking for revenge is a toast used by people known for their high alcohol intake. This usually doesn’t end well!

Drinking for revenge by Mind Hunter the Profiler February 16, 2023

Captain's Revenge 

The disturbingly blue-green colored poop after eating a bowl of Cap'n Crunch's Oops! All Berries.

"Dude, I shat blue and green this morning!"

"You eat Oops! All Berries lately"

"Yeah..."

"Captain's revenge."

Captain's Revenge by A name not already being used January 28, 2012

Revengeance 

So, its a game, its a fun game, best soundtrack but the word wont get accepted if i keep complimenting it so lets talk about its definition
Revengeance is not a word in the dictionary but its used in reference to a game made by kojima productions and platinum games, its widely considered to be a blacksheep in the metal gear family but is also recounted to be one of if not the best by a lot of the fanbase, the games plot is pretty much an american interpretation of a japanese interpretation of American imperialism

“ Metal gear rising: revengeance is not a word in the dictionary ” - maxor in an incorrect summary of metal gear rising revengeance

Revengeance by LunaTheReaper March 29, 2022

Revengda 

Revengda is a shortended version of revenge agenda. When someone does you wrong, it's always necessary to have an agenda of multiples ways to get revenge. Gotta make sure those bitches get stitches!

If Greta ever messes with me again, getting her kicked out of her sorority will be the first thing on my revengda!

Revengda by lion17 May 24, 2009