Oxygen Denier 

a term used to label a member of the oxygen is fake community, somebody who believes that oxygen is a government created concept used to push the climate change agenda.

Bod: Have you ever realised we can never see, smell or hear oxygen?

Paul McCartney: Yeah man, I've been an oxygen denier for years now.

Oxygen Denier by Cian The Sigma Male July 10, 2021

Brexit Denier 

A person who refused to admit that the Brexit is forcing the price of item to go up, and also that people will have less money to spend.

Remainer: Fucking price of Petrol nowadays since this country opted for Brexit.!!!

Brexiteer: That has nothing to do with the Brexit.

Remainer: You are a Brexit Denier.

Brexit Denier by njviln February 13, 2017

Calc Denier 

Someone in the minecraft speedrunning community who believes that the use of calculators during runs should be banned.

Jonathan: Did you hear that Sam uses calculators in his runs now? What a shame.

Davy: Don’t be a calc denier, let him do what he wants.

Calc Denier by BobbyRenzobbi June 6, 2022

Erection Denier 

When your Female partner acknowledges that you get it up but won’t do anything about it

Me: “You aight man? You seem disappointed. Married friend: man it’s been rough, haven’t hit it in 2 weeks. Me: Damn man ur old lady is such an Erection Denier!!

Erection Denier by Yell-A-wolF November 11, 2022

Separation of Church and State Denier 

A person (in most cases a supporter of the Religious Right) who intentionally ignores the 1st amendment to advanced a certain religious groups moral agenda over another. Ignore the fact the 1st amendment clearly states that the U.S. can not endorse religion.
Clearly some one who cherry-picks the Constitution without any respect for the constitution as a whole.
These type of people tend to support or smpythise with Social Authoritarian(a.k.a. Radical Social Conservatives)
People who can't fully be trust with the reigns of Government.

Mike Huckabee is Separation of Church and State Denier

Separation of Church and State Denier by Bob_the_Patriot January 25, 2008

Climate denier 

Forget climate change, this person doesn’t believe that climate exists.

They believe the climate is a government conspiracy designed so that people would keep buying winter clothes and umbrellas. They are constantly insisting there’s never been any change in any climate conditions, even between June and January.

Oh no, those climate deniers are setting fire to umbrella stores again!

Climate denier by truths only August 4, 2021

Election denier 

A candidate who disputes the outcome of an election by claiming voter fraud, despite obvious checks and balances and a lack of any evidence of tampering. Often accompanied by a complete lack of any concession to the idea they are a dick, and the voting public doesn't like them.

That Rex Patrick claimed he lost the Adelaide city mayoral vote due to election fraud. Never picked him for being an election denier like Trump.

Election denier by Shaunsterino December 20, 2022