This test has been developed by Lingedia.
Due to the nature of this test, the results could vary when you repeat it. To get a precise result you can do the test 5 times and calculate your average.
Test Your English Vocabulary Size
Find out exactly how many English words you know. This scientific tool estimates your vocabulary size against a database of 19,300 headwords.
How to take the test
You will be shown a sequence of words. Some are real English words, and some are fake words (non-words) designed to catch guessing.
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Click "Yes" if you know the word.
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Click "No" if you don't know the word.
Important: Do not guess!
Answering "Yes" to fake words will significantly penalize your final score or invalidate your test entirely. Be honest.
What counts as a word?
We count only headwords. For example, "Complete" counts as a word, but "Completely" is not.
This test includes 19,300 headwords.
Understand the results:
Invalid test
You've answered 'yes' to 4 fake words.
Consequently, you need to retake the test.
You answered 'yes' to
fake words.
and consequently you will lose
of your score.
Fake words you answered yes to:
Fake words you answered yes to: