This page is a bit sus innit bruv
Origins of Sus[edit source]
The fact that you don't know that sus was from Among Us is pretty sus not gonna lie boomer. The word gained popularity when the rise of among us happened (Innersloth is sus for not adding the airship map to mobile and PC yet).
The usage of the word sus is pretty simple. It is a short way to say SUSPICIOUS (and the fact you didn't know that is very very sus).