Omegasis 

Omegasis is a word used to define a city or structure that has a very powerful, futuristic, almost sci-fi feeling to it. More commonly it is used to describe a unique, superior city.

The city skyline looks very omegasis when looked at from the highway.

Omegasis by Monova October 12, 2007

Omegasus 

A play on words for Omega, and Sus.

Sus is derived from suspicious, popularized by the game Among Us.
Omega, despite omega being the last letter in the Greek alphabet, it is used as a synonym for Mega.

For one to be Omegasus, they must be beyond just sus. A person who is so suspicious that even their closest friends would be suspicious of them beyond the game, and would question their real-life loyalties.

*best used in chat's, it sounds cringe when spoken aloud.

"I was in electrical." Says Yellow

"Omegasus bruv." Replies Orange

"Why are we friends?" Yellow asks.

Omegasus by nattynuke January 25, 2021

Omegaism 

A term that's named after AEW wrestler and EVP Kenny Omega. It's a positive term occasionally used on Twitter when female Japanese pro wrestlers aka joshis are booked in matches, sometimes against each other.

Nothing wrong about that, but: due to AEW's/ rather Tony Khan's reluctance to put joshis on a pedestal, these matches usually take place on Dark or Elevation and have no impact on the actual product.

AEW on Twitter: "JUST ANNOUNCED: Riho will face Jungle Kyona on AEW Dark. "
AEW/Joshi fan: " Yeah, Omegaism!"
Aftermath: Kyona is nowhere near any AEW program, Riho hasn't appeared in a few months either.

Omegaism by JustAGuyWatchingWrestling January 21, 2023

omegasignia 

term used to describe the act of a bolt of lightning striking a rainbow, being the most epic sign on earth

dude, did u just see the epic omegasignia!

omegasignia by the hidden truth November 29, 2010

Omegaism 

The practice of everyone being able to survive by themselves. This means nobody relies on the support of others, they can for the most part function by themselves without needing extensive outside encouragement.

"That man is self reliant, He must support Omegaism."

Omegaism by OmegaistTillDeath February 12, 2019