Best Way to Improve your Spanish Vocabulary

The average 4-year-old knows 5,000 words in their native language. By 8? 10,000 words. Most adults have a vocabulary between 20,000-35,000 words in their native language.

Amazing, huh? You can test your Spanish (or other language) vocabulary size to see where you are.

As an example, when I first took this test my vocabulary size was approximately 3,000 words, which explains why only understood half of what the average 5 year old said :-).

So what to do about this? How can I increase my vocabulary so I can hold a conversation with the average adult?