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20 of Merriam-Webster's 1,400 new words and meanings, from vibe coding to yacht rock

Merriam-Webster added 1,400 words and definitions. Here are 20 of them, from AGI and uncanny valley to cuffing season and cake pop.

Someone at the table drops a word you half know, and you nod along instead of asking what it means. Much of the slang people trade online, at the office, and over dinner travels this way. A friend absorbs it from a group chat or a feed long before anyone explains it. A dictionary entry settles the matter. It turns a term you had to guess at into one with a fixed meaning anyone can look up, and it signals to parents, teachers, editors, and coworkers that the expression has staying power. The distance between hearing a word and understanding it shrinks the moment a reference book writes it down.

Formal recognition trails everyday speech, and the delay serves a purpose. A term that flares across timelines for a week and then disappears says little about how people talk. A dictionary has good reason to wait and watch. The wait carries a cost of its own. A reader who meets an unfamiliar expression in a news story, a work email, or a text from a teenager has nowhere authoritative to turn until the dictionary catches up. The publisher behind this update carries the line "Est. 1828" on its masthead, a reminder of nearly two centuries spent deciding which words deserve a place. Its newest entries describe a daily life few readers in 1828 could have imagined.

Merriam-Webster has added 1,400 new words and definitions to its website, according to an announcement the company last revised Sept. 25, 2026. Its editors describe the newcomers as words and meanings that have held wide, sustained use, and they pitch the batch as a window onto the present. The announcement groups its examples by theme: social media culture, technology, food, and how people live and feel. It names a few dozen entries and gives no usage counts, dates of first use, or ranking. The 20 below form a selection from those named examples and follow the announcement's theme groupings. Their sequence carries no judgment of importance.

Looksmaxxing reaches the dictionary as one of the social media culture terms in this batch, and the announcement salutes it as "well-defined." The pun works on two levels. Supplying a precise meaning is the job any dictionary entry performs.

The announcement offers no meaning, origin, or date of first use for looksmaxxing. Its company among the social media terms supplies the only context, and the wordplay carries the rest of the description. Readers hunting for what the term means will have to open the entry itself.

Parasocial enters the dictionary tagged by its editors as "unrequited," a label for affection that flows in only one direction. The term lands among the social media culture additions, a cluster of vocabulary drawn from life online.

An imagined friendship with a media character sits at the core of the concept. A viewer builds this bond and deepens it while getting to know the character over time. The adjective captures the imbalance. A fan pours feeling into the relationship, and the figure on the screen never returns it.

"Unrequited" belongs to the language of romance, and the choice frames a fan's attachment in the same terms as a crush that goes nowhere. Filing the entry under social media culture points to where Merriam-Webster's staff sees such attachments taking shape now, online.

Cambridge Dictionary named parasocial its word of the year for 2025, according to CBC News. In the same stretch, Cambridge revised its definition to cover AI companions. A one-way bond with a chatbot stretches the idea past celebrities and fictional characters. The AI revision suggests the meaning keeps widening as new kinds of one-sided partners appear.

Rickroll joins the social media culture additions carrying a label its editors attached to it: "ever-dangerous." A bracketed aside defuses the warning, assuring readers that the link to the new entry poses no threat. The reassurance lands with anyone who knows what a disguised link can do. The word "ever" frames the hazard as permanent, and the editors play that permanence for laughs.

Misdirection powers the hoax. The classic version tricks a person into clicking a link that opens a video of a song. The target expects one page and arrives at the clip without warning. The payoff is music, which turns the editors' "ever-dangerous" tag into mock gravity. The warning and the wink in the announcement mirror the trick itself. Readers brace for one thing and receive another, the same swap a disguised URL performs. An announcement that links to an entry called Rickroll invites the exact suspicion the stunt relies on. The aside answers that suspicion before a wary reader balks at clicking.

Rick Astley got his own lesson in the gag at home. CBC reports that his teenage daughter explained Rickrolling to him and coached him on handling the viral attention. The briefing ran from daughter to father, about a word built on his own first name. The man at the center of the craze took his cues from a younger guide. The episode shows the term moving through homes as well as feeds.

The editors offer their own audience no comparable tutorial. Their announcement leaves the term undefined and trusts readers to catch the reference. A reader who misses it gets a punch line with no setup. A joke Astley learned from his daughter goes unexplained on a dictionary's own page. The editors' silence assumes the prank needs no introduction, a sign of how far it has traveled.

Meme coin enters the dictionary as a social media culture term that the editors warn may prove more dangerous for some investors. The caution stands out in its batch. Rickroll earns an "ever-dangerous" tag, yet the editors wink that its link is harmless. Meme coin gets no such reassurance, and its risk falls on people's money.

The editors hedge the warning in two ways. They frame the danger as a possibility, and they confine it to some investors. The phrasing leaves room for buyers who come through unharmed while declining to call the asset safe.

Researchers who studied what they call meme asset wagering concluded that some people may treat these assets, Dogecoin cryptocurrency included, as a form of gambling. Their abstract tied the behavior to the growth of retail brokerages that charge no fees. It also named cryptocurrency exchanges offering high leverage. A third force came from online investing communities on social platforms, which the authors said make risk-taking easier and encourage it. Two of those three forces belong to the mechanics of trading. Fee-free brokerages lower the cost of each trade, and high leverage magnifies how much rides on it.

The dictionary files meme coin under its social media culture vocabulary. The study points to the same terrain, naming social media investment communities as one development closely related to meme asset wagering. Read side by side, the........

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