The English Words you need to know 
and The Method to learn them forever

Build a POWERFUL VOCABULARY in record time 

  • Learn The Most Frequent English Words 
  • Do not waste time studying vocabulary you will almost never use
  • Want an advanced level? --> Learn the 5,000 most-used words
  • Want a proficiency level? --> Learn the 10,000 most-used words

Focus on learning the Most Frequent Words 

  • The 1,000 most-used words (K1) cover approximately 80% of most common texts
  • The 3,000 most-used words (K1+K2+K3) cover about 90% 
  • The 5,000 most-used words (K1+K2+K3+K4+K5) cover about 95% 
  • The 10,000 most-used words (K1+ K2+…+K9+K10) cover about 99% 
    (Knowing these 10,000 words is almost equivalent to having the vocabulary of a graduate Native English Speaker)

Use our DSQ Method, and memorize them forever

  • With our DSQ Method, you can memorize the biggest amount of words in the shortest time possible 
  • The method applies the learning principle of "Spaced Repetition", but with longer intervals called "Quarantines"


TEST YOURSELF and discover how many words you need to learn at each level (K1 to K10):

Vocabulary.ONE categorizes words/families of English words in different bands or frequency levels: K1, K2, K3, etc.  (Learn one "K" at a time)

  • Level K1 refers to the 1st 1,000 most frequent words
  • Level K2 refers to the 2nd 1,000 most frequent words 
  • etc.
Test your level for every K Start Studying the First Level