By 43AD, when southern Britain became a Roman colony under emperor Claudius, the island was populated by speakers of several Celtic languages.
The word shows that language isn’t static, it evolves to reflect developments in a society.
By the 1950s a standard version of the language emerged, today spoken by an estimated 200 million people.
The first speech sounds were uttered about 70,000 years ago and not hundreds of thousands of years ago as is sometimes claimed.