The Oxford English Dictionary contains over 600,000 words. The Second Edition runs to twenty volumes. It weighs over sixty kilograms in its printed form. This is often described with a certain pride—as if a language with more words is a richer language. As if vocabulary volume is a measure of cultural achievement.
It is not. It is a measure of accumulated weight. And we are being crushed by it.
The average native English speaker uses between 20,000 and 35,000 words. That is roughly five percent of what the dictionary contains. The other 570,000 words are not riches. They are dead weight—archaic terms, obsolete spellings, technical jargon, words that appeared once in a seventeenth-century poem and were never seen again. Yet they all sit in the same dictionary, demanding to be acknowledged, catalogued, and in many cases, memorized by learners who cannot tell the difference between useful and useless.
No one would build a house with 600,000 bricks and insist that every brick must be carried to the site—even though only 20,000 will ever be used. No one would fill a restaurant menu with 600,000 dishes and expect the kitchen to be functional. Yet this is precisely how English treats its vocabulary: as a collection that must be preserved in full, regardless of utility.
The burden falls hardest on the one billion people learning English as a second language. They approach the language and face a mountain. Which words matter? Which words can be ignored? The dictionary offers no guidance. It is a flat list, an inventory that treats “the” and “floccinaucinihilipilification” as equally valid entries in the same language. The learner is left to guess. And guessing is expensive.
Consider the numbers. To achieve basic conversational fluency, a learner needs roughly 3,000 words. To read a newspaper comfortably, about 8,000 words. To engage with academic English, perhaps 15,000. Every word beyond this threshold is optional. And yet the English teaching industry—textbooks, apps, exams—treats vocabulary as an open-ended accumulation game. More words equals better English. This is false. More words equals more memorization. And memorization without purpose is not education. It is hazing.
The alternative is not to burn the dictionary. It is to recognize that a living language is defined by what its speakers actually use, not by what lexicographers have preserved. If a word has not appeared in common usage for two hundred years, it is not a word. It is a fossil. And fossils belong in museums—not in the working vocabulary of a global language.
A leaner English is a more learnable English. A pruned vocabulary benefits everyone: the student in Jakarta, the businessperson in São Paulo, the refugee in Berlin. Every word we retire is a minute we give back. Every unnecessary entry in the dictionary is a stone removed from the mountain.
English does not need 600,000 words. It needs the words that work. The rest is noise. And a language that cannot separate signal from noise is not rich. It is overloaded.
Our Recommendation: Judge a language not by how many words it has, but by how quickly a learner can use it. The mountain is not a monument. It is an obstacle. Start removing stones.