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sus

Suspicious; giving off the feeling something isn't right.

sʌsCoined ~20202020sGen Alphamainstream69.8K viewsLast reviewed Jun 29, 2026+ Add a definition
🔥 Gen Z & TikTok
3 definitions
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Born ~2020 · no dated citations yet
2020BornToday, 2026

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#1·Apr 23, 2026Casual

Suspicious; giving off the feeling something isn't right. "He's acting sus" = something's off. Can target a person, a story, or a plan. Lives somewhere between vague paranoia and actual evidence — usually the vibe tells you before the facts do.

"He's been acting sus since his phone started blowing up at 2 AM."
Origin: Short for "suspicious"; mainstreamed by the game Among Us in 2020.
For parents

sus means Suspicious; giving off the feeling something isn't right. It's mostly used on TikTok and short-form video. It's casual and generally safe with friends and online. It's standard online vocabulary; nothing inherently concerning about hearing it.

For ESL learners

"sus" is slang. It means: Suspicious; giving off the feeling something isn't right. Register: casual. Use it in: casual conversation and online posts. Avoid in: formal writing and professional emails. A more formal way to say this is "suspicious".

Cluster: disapproval
Heard in the wild
  • “If an [internal link](https://en.wikipedia.org/w/index.php?title=Special:WhatLinksHere/Sus&namespace=0) incorrectly led you here, you may wish to change the link to point directly to the intended article.”

  • “This one-dimensional aspect of the SUS is both a benefit and a drawback because the questionnaire is necessarily quite general.”

  • “If an [internal link](https://en.wikipedia.org/w/index.php?title=Special:WhatLinksHere/Sus&namespace=0) incorrectly led you here, you may wish to change the link to point directly to the intended article.”

  • “This one-dimensional aspect of the SUS is both a benefit and a drawback because the questionnaire is necessarily quite general.”

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@slangora·Sep 1, 2026

Calling something 'sus' is a vibe-based accusation, not a formal one — it signals suspicion without claiming proof, so treat it as a prompt to look closer rather than a verdict. It can target a person, a story, or a plan equally. — Slangora Editors

Global
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#2·Apr 24, 2026GlobalCasual

"Sus" has gradations: slightly sus (something's off), lowkey sus (suspicious but you want to believe), mad sus (actively suspicious), bro sus (the homoerotic-misstep flavor used as gentle teasing).

"He memorized her coffee order on day one. Little sus, bro."
Origin: Gen Z / TikTok-era slang.
Cluster: disapproval
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UK
#3·Apr 26, 2026UKFormal

Pre-Among Us: "sus" was used as British slang for "suspicious" since the 1930s. Long history before the 2020 viral revival.

"Stopped and searched under the sus law."
Origin: British police slang for "suspect" / "suspicious"; "sus law" was the 1824 Vagrancy Act provision.
Cluster: disapproval
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For specific readers

sus means Suspicious; giving off the feeling something isn't right. It's mostly used on TikTok and short-form video. It's casual and generally safe with friends and online. It's standard online vocabulary; nothing inherently concerning about hearing it.

Why is this section here?

Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.

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