When the vibe/mood/aura of a room/place seems uneasy and out of the ordinary, the air is heavy and something feels wrong. It commonly foreshadows that something terrible is about to happen.
The term was heavily popularized in 2017 when the game DDLC (Doki Doki Literature Club) was released, and one of the characters (Yuri) uses it.
“Stagnating air is common foreshadowing that something terrible is about to happen” -Yuri2017
an individual who is opposed to any change, improvement or advancement simply because it was originally presented by an opposing political party, source or ideology
an individual who's only opinion on a subject is to reject the opinion being presented
an individual who does not have a direction but is sure that the one being suggested is wrong
an individual who offers only criticisms, not solutions
an intellectual Luddite
"Why is Joe so dead set against health care reform? I thought he was going bankrupt from all his hospital bills."
"Oh, well, its unfortunate, but he's a Stagnative."
"So, he's opposed to it on principle?"
"No, Stagnatives don't have principles, they just reject yours."