Slang in 2025 was less about new words than about new aesthetics — micro-coded ways of being that came with their own vocabulary. Brat summer opened the year, mob wife followed, demure carried late summer into autumn, and AI slop ran through everything like a base note. Here's the working glossary.
Brat summer (Charli XCX, June)
The word "brat" had a specific meaning for most of English history — a misbehaving child. Charli XCX's June 2024 album Brat reframed it: bratty became a positive aesthetic, a kind of late-night, slightly-feral, unbothered femininity. By summer 2025 the lime-green album cover was a visual shorthand for "this person doesn't care what you think." Kamala Harris's brief endorsement-by-meme cycle in late 2024 ("Kamala IS brat") is what pushed the word from music criticism into mainstream political coverage.
Demure (TikTok, August)
Demure is the year's clearest example of a single creator minting a meta-vocabulary in two weeks. Jools Lebron's TikTok series — using "demure" sarcastically as a modifier ("very demure, very mindful") — turned a 19th-century moral category into a tonal joke about workplace femininity. Within a month every brand on Instagram was captioning posts "demure." Within three months the word had been reclaimed back into ironic usage.
Mob wife (TikTok, late winter)
Mob wife replaced clean girl as the dominant TikTok aesthetic in early 2025. The look: fur coats, chunky gold, sharp eyeliner, an unrepentant glamour register. The vocabulary that came with it — fur-pilled, mafia-coded, big jewelry energy — coded the whole thing as a deliberate rejection of the previous five years of minimalism. Worth knowing alongside quiet luxury, which it was explicitly responding to.
AI slop (online, all year)
AI slop was 2025's verb-noun for low-effort generative output: listicles written by GPT, image generations of Shrimp Jesus on Facebook, AI-narrated TikToks reading Reddit threads aloud. The term escaped from Hacker News and X commentary into mainstream complaint — by September even non-technical writers were using "slop" as the obvious word for cheap auto-content.
Vibe coding (June onward)
Vibe coding was Andrej Karpathy's accidental coinage in February 2025: the practice of writing software by describing what you want in natural language to an AI and accepting whatever it produces. Within months the term was everywhere in tech discourse, used both seriously (this is the new way) and disparagingly (this is why production is broken).
Aura points (Gen Alpha, ongoing)
Aura as a unit of measurement — you can gain or lose aura points through specific behaviours — was Gen Alpha's contribution to 2025 slang. Saving someone's life is +1000 aura. Tripping in front of a crush is -500. The vocabulary lets a generation that grew up gamified turn social standing into RPG mechanics. Not coincidentally, the cohort using "aura" most heavily is the same cohort that grew up watching Twitch streamers and hearing every action narrated as a points calculation.
Skibidi (Gen Alpha, ongoing)
Skibidi doesn't mean anything — it's the meme-word version of Smurfette's blue, a placeholder modifier you can attach to any noun. Skibidi rizz, skibidi toilet, skibidi vibes. The fact that it doesn't decode is the joke. Adults parsing for meaning miss it; kids using it correctly know it's a sound, not a sense. See what is Gen Alpha slang for the longer pattern.
Sigma / chad / mewing (also Gen Alpha)
The masculinity micro-vocabulary continued in 2025. Sigma — the loner archetype — saturated and started turning ironic. Mewing (a mostly-debunked jaw-aesthetic practice) became its own joke. Looksmaxxing as a genre of TikTok content scaled and then plateaued. All of this vocabulary is an inheritance from incel-adjacent forums of the 2010s, scrubbed and repackaged for Gen Alpha YouTube Shorts.
Delulu (peak)
Delulu hit saturation in 2025, with "delulu is the solulu" ("delusional is the solution") becoming a recognised motivational phrase across self-help TikTok. The K-pop-fandom origin (where it described stans imagining romantic relationships with idols) is increasingly invisible to people using it now to mean "self-deceptive in a productive way."
What 2025 told us
The year's pattern was: aesthetics minted on TikTok, scaled in 4–6 weeks, retired by Christmas. The vocabulary is now turning over fast enough that any word older than a calendar quarter starts to feel slightly dated. Compare the pace to 2010s slang ("on fleek" lasted a year; "yeet" lasted two) and you can see the lifecycle has roughly halved. We track the mechanics in the lifecycle of a slang word and the platform forces in where slang is born now.
2026 is already shaping up to do the same thing again at the same speed. We'll catalogue it the same way.
See the underlying terms in our 2025 era hub.