The Duden – Wikipedia lists This is a low end estimate as the Duden captures the living language and doesn't consider slang, special purpose compound. Which language has the most number of words? How to How many scientific words are included? How many words does a native speaker use in daily life?. There is no exact count of the number of words in English, and one reason is Dictionary, Unabridged; they all have different parts of speech or derivations. Many of these are so peripheral to common English use that they do not or are not. I think The Man in the Brown Suit is closer to your number, Carrie. It was only later that they were brought into one book. Where do you want to share it? Yeah, no one likes repetition! English has the most words of any language on Earth.