Mysteria 

Mysteria Aka Jessica Lopez is a public figure, and political social injustice activist in Lancaster Pa. NOUN:

Mysteria is leading the march.

Mysteria by Harlequin Quinzell December 14, 2022

Mysterion 

Mysterion is the superhero alter ego of Kenny McCormick! He’s wearing a purple cape with a hood and a question mark on his head. He’s wearing a purple shirt with a letter M on it, a pair of purple pants and an underwear on top! His power is that he can’t die, because if he dies he will wake up in his bed. And he’s basically the batman of South Park!

Mysterion: *dies*
*in kenny’s room*
Toolshed: Dude, Kenny, what'd you run away for?! We've gotta fight these guys!
Mosquito: Yeah, come on, get your costume on, lazy-ass!

Mysterion by rehobalint November 17, 2019

Going Mysteria 

To go off half cocked, to solve a problem by ignoring it....etc

Don't be going Mysteria on me

Going Mysteria by Lerasi April 28, 2004

mysterionics 

When a woman throws a wobbler at a guy for no apparent reason whatsoever.

Man1: "So I get home at 2:30 in the morning, after a night with the lads, and she has a fit of mysterionics."
Man2: "I've given up trying to understand them, mate. So, apart from that, how was your anniversary?"
Man1: "... Ah ..."

mysterionics by Freakstone October 7, 2007

mysteria 

a mysterious disease.

She is suffering from a mysteria. Even the doctors do not know what that disease is.

mysteria by uttam maharjan July 20, 2010

mysterical 

a mysterious pen0s

mysterical by Anonymous March 26, 2003

Mysterical 

A mix of two words; mysterious and mystical

The pequod looks very mysterical

Mysterical by Gman413 February 4, 2020