Infinitu

Infinitu was a very big meme in the past, and it was treated as a bigger infinity. It might've been the biggest meme of the past, and still remains quite big when compared to new memes, but it's ultimately overshadowed by a meme like -ery. It was dominant in 2018 and early 2019.

Origin
This meme started when MrAlen misspelled "infinity" as "infinitu", because Y and U are right next to each other on the keyboard, but everyone thought it was probably intentional and started using it as a real word, which meant a value greater or equal to infinity. Despite its popularity, it has died over time and it now belongs to the meme graveyard. During its reign, it was a loved meme.

There were some adaptations of this meme, such as: "T h a n o s s and the Infinitu Gauntlet", an overpowered character.

This meme died naturally without being killed by anyone, and it's a perfect example of a huge meme dying naturally.