Your total vocabulary size is estimated to be: 13,400 words
This is the estimated number of entries in a standard dictionary for which you know at least one definition.
Thanks for taking the test! Based on participations so far, we've already got some decent statistics. Most native English adult speakers who have taken the test fall in the range 20,000–35,000 words. And for foreign learners of English, we've found that the most common vocabulary size is from 2,500–9,000 words.