Mouth breather 

A person who without hesitation wil tell on you or someone who gossips too much and wont keep their mouth shut

You know the feds will be at your door if bob knows what you're doing, he's a mouth breather.

Mouth breather by Squig9669 May 5, 2018

Mouth breather 

A person who dosent understand; stupid; dumb; etc

"That person is a mouth breather."
"Ugh, you're such a mouth breather."

Mouth breather by DEMOGORGAN October 1, 2018

non breather 

a wrestling move when choking someone until they’re too weak to fight back

someone “fight me”

jono “don’t need to fight bitch”

*non breather time*

non breather by notheretofuckchickens April 28, 2019

Mouth breather 

A person who's so unbelievably dumb, they couldn't even be bothered to breathe through their nose. To put it simply, mouth breather is another word for an idiot.

"That guy, *name here* is nothing but an inconsiderate, close-minded mouth breather!"

Mouth breather by Suburbanz71 February 17, 2021

Mouth-breather 

Someone who no longer wears a mask indoors for large gatherings. These people are not anti-maskers/anti-vaxxers and used to wear their masks. Due to unclear expectations set by the CDC, state governments, businesses, and peers, they no longer wear their mask.

I was going to go to a wedding this weekend, but I'm sure there will be a lot of Mouth-breathers at the event.

Mouth-breather by wells33abducted December 16, 2021

Non-Breather 

A term used by bad people to make fun of people with asthma. They often go on unhinged rants about how they pollute the airspace, or joke about how they think asthmatic people use their inhalers to take inhalant drugs.

(Person, Coughing)
Asshole: "Uh oh, sounds like we got a Non-Breather in here."

Non-Breather by Rainy_daze March 6, 2022

Mouth-breather 

Matthew Best

Damn they're such a mouth-breather

Mouth-breather by spicyjfc August 27, 2022