Where Did 'Cat' Come From? The History of Everyday Words

The word 'cat' is about 1,500 years old. It came to English from a Latin word, 'cattus,' which spread across Europe as Romans traveled. Before that, nobody knows exactly where 'cattus' came from — it might trace all the way back to ancient Egypt, where cats were sacred animals. Every word you use every single day has a secret story just like this one.

By the end of this lesson you will be able to: • Explain what etymology means in your own words • Name 3 common English words and where they came from • Identify word roots that appear in many different words • Use a root you know to guess the meaning of a new word

Etymology (say it: eh-tih-MOL-oh-jee) is the study of where words come from and how they have changed over time. The word 'school' comes from the ancient Greek word 'skhole,' which actually meant 'free time' or 'leisure.' Back then, only wealthy people had free time to sit and discuss ideas. Over 2,000 years, the meaning slowly shifted to the place where you go to learn. The word 'disaster' comes from ancient Greek 'dis' (bad) and 'aster' (star). People once believed that bad events happened because the stars were lined up wrong — so a disaster was a 'bad star' event. Now we use it for storms and accidents, but the stars are still hidden inside the word.

Some words are so basic that they look very similar in many different languages. The word for 'mother' is a famous example: • English: mother • Spanish: madre • Latin: mater • German: Mutter • Hindi: matar All these languages come from one ancient language called Proto-Indo-European, spoken about 6,000 years ago. The words for water, fire, night, and mother have stayed surprisingly close across thousands of years and thousands of miles. The word 'father' works the same way: Latin pater, Spanish padre, English father — all cousins.

Learning just a few ancient roots gives you a superpower — you can guess the meaning of hundreds of words you have never studied. The Latin root 'aud' means 'to hear': • auditorium — a place where you go to hear things • audio — sound you can hear • audience — the people who are listening • audible — able to be heard The Greek root 'bio' means 'life': • biology — the study of living things • biography — the story of someone's life • biodegradable — able to be broken down by living organisms The Greek root 'geo' means 'earth': • geography — the study of Earth's land and features • geology — the study of rocks and Earth's layers • geothermal — heat from inside the Earth

Words do not stay frozen in time. Their meanings drift, sometimes completely flipping. 'Awful' once meant 'inspiring awe' — something so powerful it filled you with wonder. A king could be described as awful. Now it means terrible. 'Silly' used to mean 'blessed' or 'happy' in Old English. Over centuries it shifted to 'innocent,' then 'foolish.' 'Terrific' originally meant 'causing terror.' Gradually it became a word of admiration. This slow shift in meaning is called semantic drift. And new words appear every year: 'texting' became a verb around 1998, and 'selfie' entered the dictionary in 2013. Language is never finished — it grows every time humans invent something new.