I saw a tweet:

People who joined Facebook after 2017 are sus.

What does this word "sus" mean in this sentence?

  • 11
    It's the opposite of "fetch"
    – JoelFan
    Feb 9, 2022 at 6:07
  • 4
    @JoelFan Sorry, what does that mean? Feb 9, 2022 at 11:37
  • 2
    JoelFan is being funny. "sus" is slang for something we don't like, while "fetch" is slang for something we do like.
    – gotube
    Feb 10, 2022 at 6:59
  • @AGamePlayer See ell.stackexchange.com/questions/220648/…
    – lly
    Feb 10, 2022 at 7:34

3 Answers 3


This is a slang term used primarily by members of "Generation Z" (currently aged 10–25) to mean "suspicious" but also "dubious", "strange", "creepy", or "socially unacceptable" (in the sense that a "creepy person" is socially unacceptable).

In this sentence, it is saying that anyone who joined Facebook in the year 2017 or afterwards is creepy or socially unacceptable.

  • 59
    It's a lot older than Gen-Z (who, of course, think that they invented everything). When I was a UK hippie around 1968 to the early 1970s, we used it as an adjective and a verb. It was usually written 'suss'. If something was a bit suss, it was a bit suspicious, strange, etc, and if you 'sussed' something you suspected it, and to 'suss out' a mystery, puzzle, obscure thing, etc, meant to puzzle it out, solve it, etc. I have the feeling it came from Cockney or police slang. Still in fairly common use today among 'normals' (people who aren't or weren't hippies or beatniks). Common in Australia. Feb 8, 2022 at 10:00
  • 31
    ''Suss'' is a very old slang word and was definitely not invented by gen z Feb 8, 2022 at 13:17
  • 80
    I think the growing popularity of sus across the Gen Z is due to Among Us (ive never saw it widely used before that game [but im not native speaker])
    – CharybdeBE
    Feb 8, 2022 at 13:21
  • 29
    I agree with the definition you've provided, but I always interpreted it to be an abbreviation of suspect, not suspicious. 'Suspect' (as an adjective) has the stress on the first syllable so is pronounced the same as 'sus'.
    – dbmag9
    Feb 8, 2022 at 14:32
  • 20
    In truth, I think this explanation isn't quite right. "Sus" in the modern context is most likely from the video game Among Us, and is meant to indicate that the person in question is an impostor/alien. And this form of accusation has become something of a meme/joke. So when it's being used outside the game-context, I tend to think it's more likely to be a joke about the person in question being "wierd", rather than something with more negative connotations (e.g. "dubious"). Still, that's the joy of slang - it rarely comes with a formal definition!
    – Juice
    Feb 9, 2022 at 13:30

As CharybdeBE noted above, it's a slang term which has become popular thanks to the Among Us game, a multiplayer game where one or more of the characters are secretly evil aliens trying to kill all the other players. A large part of the gameplay involves accusing other players of being an alien, which is often done by calling them "sus".

This is a pretty good explanation:


Whether it's directly descended from the older term "suss", or if it naturally evolved independently is a good question! Personally, I'd guess it evolved independently, but I've not attempted to do any research into it, so that guess may well be... sus.

Still, I wouldn't be too surprised to find there's a student thesis or academic paper floating around which attempts to answer that question, though!

  • 3
    @steve yeah this is a bit sus...
    – Cullub
    Feb 8, 2022 at 17:08
  • 10
    I thought the imposters were aliens (disguised as crew members), in the game lore. Then again I've never played it so I can't be sure.
    – David Z
    Feb 8, 2022 at 17:28
  • 4
    They're impostors, not impostErs. So what you're saying sounds very sus, too :) Anyhow, while most of the kill animations could be done by a human or android, not even Gene Simmons has a tongue long enough to stab through someone's head, nor is his tongue located in his belly... (Kill animations can be viewed here: among-us.fandom.com/wiki/Kill) So, yeah. Slightly sus, but still valid explanation!
    – Juice
    Feb 8, 2022 at 18:39
  • 9
    As someone who fell into playing AmongUs very early: I would say that even if people who knew the older definition brought "sus" into AmongUs, the meaning did evolve in the context of the game, because it wasn't in the active vocabulary of most players. And I'd say that the current general usage probably derives from the meaning in AmongUs. Which would mean that we do have to differentiate between a "pre-AmongUs meaning" and a "post-AmongUs meaning" here.
    – orithena
    Feb 9, 2022 at 12:23
  • 1
    I think the Among Us demographic guarantees that this "sus" indeed was an independent derivation from the older "suss", complete with different connotations and usage. Feb 10, 2022 at 2:06

Sus (sometimes spelled "suss") is old, old slang, with two related main meanings.

Usual/main meaning

The meaning that applies here is sus = suspicious/suspicion.

(It can mean "suspect" but only as an adjective meaning suspicious/dubious such as "that document is suspect, it could be a forgery", never as a noun "John is a suspect in a robbery")

In the UK during the 1980s, it was slang that someone was "arrested on suss" - meaning on suspicion of being up to no good, carrying stolen goods or drugs, going equipped for crime, being involved in a crime that happened, loitering with intent to commit a crime.... something like that.

The same word and meaning, was also used to refer to an object or action, as being suspicious, suspect, dodgy, or otherwise not to be taken at face value or given good faith. So whether a person joining a protest was a genuine protester or an infiltrator, whether something was an accident or deliberate, whether something happened in good or bad faith, whether the gift is really a gift or an enticing trap/trick...... "It's (or They're) suss" or "It's (They're) a bit suss" (meaning "suspicious/suspect") covered all these shades.

So this is the meaning of your Facebook quote. The speaker is saying that people who joined Facebook after 2017 are suspicious/suspect in some manner - less likely to be seeking social media for the usual or traditional motives, or more likely to be dubious in some other manner. They need extra scrutiny as a rule, in a way that pre-2017 Facebook users usually don't need.

(It can also be used less seriously, I'll cover that below)

Related meaning

The other, related meaning, is most often seen in the phrases "sus(s) out" or "sussed/sussing out" or "sussed/sussing it". Meaning roughly, to have figured out or solved a conundrum, puzzling thing, problem, or anything else.

The connection to the first meaning is that the adjective something is sus(s) becomes used as a verb "to suss", or to "suss out".

Once someone or something is "sus", the logical next step is trying to figure out whether it/they are in fact the dodgy and bad faith things that they are suspected to be. The process of working that out naturally in slang terms becomes "sussing out" or "sussing it out" and having an answer becomes "sussed (it) out".

Note that while "sus/suss" always implies suspicious/suspicion, the related verb "to suss out/sussing out" does not automatically imply suspicion. As often happens, the slang "drifts" in meaning. The verb can simply mean to solve or figure out, a thing.


OP: I got a text telling me about my tax refund, but I don't pay any tax

A: Sounds sus to me, mate

B: Yeah, definitely sus. Go check with your employer's HR team see if its legit? [=legitimate, valid]

OP: Okay, sussed it out, its a scam, my friend got the same text last week and the website's a fake.

B: Great, I'll tell Joe not to bother checking the phone number if you've sussed it already.

And some examples as a verb,where it simply means "to work out or solve a thing":

I just sussed out (worked out/solved) that crossword clue!

My dad finally sussed (worked out) that I'm an adult and can do things like visiting friends without asking permission!

(The implication being, he had to think about it to realise the speaker is an adult and therefore can do these things.....)

It can also be occasionally used less seriously.

For example in humour:

  • "People who drive Honda cars are definitely suss"
    (meaning roughly, in humour, the speaker is suggesting there's something wrong or dubious about the kind of person whom would choose to drive a Honda car)

  • OP: "I ordered chicken and pineapple on my pizza."
    Friend: "Pineapple? Sounds sus to me, mate!"
    (in humour, joking at their friend's choice of topping)

So your tweet could also be making a joke, that people who joined Facebook recently are probably suspicious, but may not be serious about it. We can't tell which it is, serious or joking, without more context and perhaps even then its not totally certain.


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