Every year the internet invents new words, and 2025 was no exception. Whether you want to feel young again, catch up, or just finally understand what your group chat is saying, here are nine internet slang terms that ruled 2025.
9. Bop
The word “bop” took on a darker meaning in 2025, referring to a person who has a large number of romantic partners, moving from one to the next in quick succession. This term is often used in the context of cyberbullying or to shame individuals for their dating habits. Its rise shows the negative side of viral language, where terms can be weaponized to criticize people.
8. Ate / Left No Crumbs
The word “ate” and its follow-up “and left no crumbs” became the ultimate compliment in 2025. To say someone “ate” means they did something flawlessly, whether it’s a performance, a fashion look, or a witty comeback. Adding “and left no crumbs” amplifies the praise, suggesting their performance was so perfect there’s no need for a critique.
7. Delulu
Short for “delusional,” “delulu” became the go-to term for describing someone who acts irrationally or holding onto unrealistic beliefs. The term is often used playfully and self-deprecatingly. Its popularity speaks to a moment of self-awareness in today’s online stan culture.
6. Sigma
This term describes a man who is confident, successful, and independent, but operates outside of conventional hierarchies. Unlike the attention-seeking alpha, the sigma is a lone wolf who plays by his own rules. The term became popular in online communities, reflecting a desire for a model of masculinity that values introspection and self-reliance over dominance.
5. Locking In
The phrase “locking in” became a popular term for a state of intense focus and determination. To be “locked in” means to be completely absorbed in a task, fully committed to achieving a goal. The phrase became a motivational mantra for students, athletes, and anyone striving for excellence.
4. Crashing Out
Popularized by the reality TV show “Love Island USA,” “crashing out” describes a strong and overly emotional outburst. The phrase captures the feeling of losing control and acting impulsively in a moment of intense anger or frustration. To “crash out” is to have a moment of dramatic realness in a world that often feels anything but.
3. Skibidi
Let’s not forget the most quintessential Gen Alpha slang term: “skibidi.” Originating from the YouTube series “Skibidi Toilet,” the term’s meaning is context-dependent. It can be used to describe something as good, bad, cool, or weird. The ambiguity of “skibidi” is the point; it’s a playful and intentionally confusing word that serves as a joke for the youngest generation of internet users.
2. Brain Rot
Named Oxford University Press’s Word of the Year for 2024, “brain rot” captures the feeling of consuming too much low-quality internet content. The term describes the content itself and the supposed mental state that results from overexposure. The term “brain rot” resonated with a generation that creates and consumes an endless stream of memes, videos, and viral trends.
1. Demure
The word “demure” became the defining slang term of 2025, thanks to TikTok creator Jools Lebron and her viral catchphrase, “very mindful, very demure.” Lebron recontextualized the word to mean being considerate and minding one’s own business. Its journey from a quiet adjective to a viral sensation shows the power of creators in reshaping language and culture in the digital age.