What does 'sus' mean?

Sus is used as a synonym of suspicious, or suspect, as in

What Every Client Should Know about SUS Scores

Lunar Archivist on X: While use of the word sus as an abbreviation for suspect or suspicious dates back all the way to 1824, it only entered popular usage in the United

What's the System Usability Scale (SUS) & How Can You Use It?

What Does Sus Mean In Among Us & When Texting? The Slang Meaning & How To Use It

Among Us' “pretty sus” meme, explained - Polygon

Sus Meaning, Variations, and Uses

SUS Meaning: The Definition, Use Cases, and More – AirDroid

Which one is it really? I'm pretty sure its suspicious : r/memes

What Does SUS Mean in Text? Unmasking Its True Meaning

Sus Piano Chords - Explained for Beginners