Do you like words and want to know very rare and uncommon English dictionary. The tricky task for those who are planning to revise their vocabulary and find out more interesting words with explanations!

Collect your own book of knowledge with new words

For those who like to win some points - here you are! you need to complete the whole level with 10-20 words to save your results!

One fail and you should start all over again!

Wish you good time with our Book of your Knowledge