Eternium

(adjective)
Having occurred or to occur an exaggerated amount of years in the future or past.

"An eternium ago, we used nothing but sticks and stones to make fire."

"In an eternium, we may learn how to time travel!"

Eternium by Bill Gospel March 15, 2023

Eternum

Forever, to last until the end of time.

I promise to love you for eternum. Until my last day.

Eternum by anonymous October 14, 2020

Eternimate 

Attribute of certain magical creatures, an ability, and requirement to mate with other such creatures, permanently, and typically spanning more than one lifetime. Not that any types of creatures may have the ability to live more than one life. For none of us do.

Maggie is my eternimate. I met her a long time ago, and we haven't even met yet.

Eternimate by poisonIvy September 30, 2017

eternum

Aesthetics' boyfriend kissmm

Eternum is bad and all of his replays are cheated

eternum by CONBlaze July 4, 2019