Glossary / Slang & Internet Culture

What does Sus mean?

Sus is short for suspicious or suspect — describing anything that seems off, shady, or untrustworthy. Decades old in AAVE, it exploded globally in 2020 through Among Us, where identifying the "sus" impostor was the whole game. It remains everyday vocabulary for mild suspicion.

Sus predates the internet — it appears in 1960s British police slang and long-running AAVE usage — but Among Us made it one of the most recognized slang words on Earth. "That's kinda sus" works on anything: a friend's alibi, suspicious food, an app's permissions request.

Post-Among Us, sus settled into permanent casual vocabulary. It is mild — closer to "questionable" than "criminal" — and safe across audiences. The Among Us association also gave it a comedic gaming undertone that still colors usage ("red is sus" remains a reflexive joke).

Used in the wild

Comment: "he deleted the comment instead of just answering the question... sus behavior."

Most used on:TikTokX (Twitter)DiscordYouTube

FAQs about Sus

What made "sus" so popular?

The 2020 Among Us boom. The social-deduction game revolves around spotting the suspicious impostor, and "sus" was its core vocabulary during a year when everyone was playing.

Is sus an insult?

Mild at most — it flags something as questionable or shady, usually with a joking tone. It is among the safest slang terms for general use.

Related terms

Cap

Cap means a lie or exaggeration. Replying "cap" or the 🧢 emoji to a post calls it false; "you're capping" means "you're lying." It is the counterpart to "no cap" (no lie). The term comes from AAVE, where capping has meant boasting or exaggerating for decades.

NPC

NPC means "non-player character," borrowed from video games to describe someone who seems to act on a script — no original thoughts, predictable behavior. Calling someone an NPC is an insult about conformity. It also names the "NPC streaming" trend where creators perform robotic, repetitive reactions for tips.

Vibe Check

A vibe check is a spot assessment of someone's mood or a situation's energy: pass it and you are good company; fail it and something is off. "Failed the vibe check" dismisses bad energy, and "vibe check!" is a playful greeting demanding a status report. It peaked as a 2019-2020 meme and settled into permanent vocabulary.

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