sus
suspicious, sketchy, suspect
Origin
„sus“ is a short form of the English words 'suspicious' or 'suspect' and has been attested in English as an abbreviation since the early 20th century (police jargon, from the 1920s) – so it is not an invention of the „Among Us“ community. It entered German youth slang mainly through the online game „Among Us“ (2020/2021), in which suspicious-seeming players are called 'sus'. From there it spread via social media into everyday language.
Building blocks
Words in this expression
Examples
Warum guckt der uns die ganze an? Voll sus.
Why does that guy keep staring at us? Totally sus.