Collins Dictionary’s 2025 word of the year list is a fascinating snapshot of a world in flux, reflecting our responses to everything from climate change to personal health. While the AI-term “vibe coding” won the top prize, other entries like “coolcation” and “biohacking” reveal how we are adapting our lives and language.
“Coolcation,” defined as a holiday in a place with a cool climate, has entered the lexicon as a direct response to rising global temperatures. As traditional summer hotspots become unbearably hot, travelers are increasingly seeking refuge in cooler destinations, and a new word has been coined to describe this trend.
Another significant entry is “biohacking.” This term refers to the activity of altering the natural processes of one’s body in an attempt to improve health and longevity. It ranges from simple dietary changes to more extreme technological interventions, reflecting a growing desire to optimize human performance and extend lifespan, often aided by technology.
These terms, drawn from a 24-billion-word database of language, show English evolving in real-time. “Biohacking” speaks to our desire to control our internal environment, while “coolcation” speaks to our need to escape our external one.
Alongside other list-makers like “Henry” (high earner, not rich yet) and “micro-retirement” (a career break), these words paint a picture of a society actively seeking new ways to cope with modern pressures, whether they be environmental, financial, or biological.