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Latin for 'One Year'.
This YouTube channel was founded on November 15, 2019 by Mark Fischbach (Markiplier) and Ethan Nestor (Crankgameplays). They post one video every day for 365 days. After that time is up the channel along with all its videos will be deleted.
Me: Did you see Unus Annus's new video?
Friend: Yeah, Mark really is a masochist.
by _Magikarp_ August 11, 2020
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May 17 Word of the Day
Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.
I felt deep sonder thinking about the all the people who looked up this word along with me.
by rednos January 10, 2013
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2
1. Latin meaning "One Year" and the name of a channel created by Mark E. Fishbach (Markiplier) and Ethan Nestor "CrankGameplays" that will be deleted after one year of its first upload.

2. A channel. An excuse for Mark to display his masochism
Subscribe to "Unus Annus". Memento Mori
by SS_Derp May 11, 2020
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3
A channel run by Ethan Eef Nestor and Mark Masochist Fishcbach, They started it on November 15th, 2019. Its about death, basically. They ocasianally tell people that the end is coming ever closer- But most of the time they just let things go wild for sh**s and giggles.
Some dude: hey whats that that one Unus Annus episode?
Another Dude: The one were they play children's games in the dark?
Some dude: Thats the one
by yoyeetyboi August 26, 2020
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4
A latin phrase meaning β€˜one year’. It is also a youtube channel made by Mark fischbach (markiplier) and Ethan Nestor (crankgameplays). This channel was made in the inevitability of death and how everything comes to an end. Similarily the channel will be deleted in one year from it’s creation.
You should subscribe to Unus Annus
by Tk.aj December 14, 2019
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5
1. Latin meaning "One Year" and the name of a channel created by Ethan Nestor and a friend. This channel will be deleted at the end of the year to symbolize the inevitability of death.

If you are a true fan, you will know it is run by Ethan Nestor and Mark Fischbach, I only said and a fan because i feel bad for Ethan's under recognition.
"Unus Annus Unus Annus Unus Annus!" "Are you a part of a cult?" "Hell no, Unus Annus, Momento Mori."
by OreoGirl32 May 28, 2020
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6
A channel run by CrankGameplays and a friend.
Monika: Hey, have you heard of Unus Annus?

Sayori: No.

Monika: It's a joint channel run by CrankGameplays and a friend. I'm sure you've heard of him.

Sayori: Oh yeah, I know him!
by Nikolettaa July 28, 2020
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