A viral infection that mainly afflicts ages 10-20. It makes the infected constantly make horrible awful among us jokes when its not even funny constantly. Usually in an unfunny ironic fashion.
Doctor: I'm sorry but we suspect you've contracted amongusitis. There's nothing we can do.

You: Suspect? Sus? Like the impostor from Among Us????
by NovaDelta July 12, 2021
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omg, the amongusness in this room is astronomical.
by PISSBABY6969 September 2, 2021
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The implementation of Among us into Something;
Per se a video game, Video, or a person's bum.
Man called adin: "Amongusization"
by BunPickleCheese1 April 21, 2023
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when your friend really love among us to a very high degree
friend 1: dave has a bad case of amongusitis
by minecrafter112314 May 16, 2022
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