sus

Sus flags that something does not add up. It works as a playful accusation ("you've been acting sus all day") and as a real warning ("that link looks sus"). Nobody under about forty needs it explained. Gen Alpha kids who never played Among Us say it without a second thought. The game-meme layer around it, "sussy" and "the impostor is sus," is the part that aged. Those read as 2020 nostalgia now, said only as a joke about that era.

One older pattern is worth knowing. In some 2010s American use, calling a man sus hinted he was secretly gay. That use has largely died out. Some later arguments claim the word itself is rooted in homophobia. Those mix up that one phase with the actual origin, which is just a short form of "suspicious."

Sus started in British police and criminal slang. A 1936 London crime novel uses it for "a suspected person." By the 1950s it meant "suspicious" in underworld memoirs. The shorthand came from the law itself. The Vagrancy Act of 1824 let police arrest any "suspected person," a power nicknamed the "sus law." Police used it far more often against Black Britons. After the 1981 Brixton uprising, that offence was abolished. American sus looks like a separate shortening of "suspicious" that surfaced in 2000s internet slang. Black online communities are widely credited for spreading it through the 2010s. Then Among Us, released in 2018, exploded during the pandemic. By late 2020 the game had passed 100 million downloads, and "sus" was its accusation word. The meme wave carried it everywhere. Merriam-Webster added sus in September 2022, citing sustained, widespread use.