Vocabulary Size Test
gauge your lexical scale. decide if the presented dictionary terms exist in English.
brain & cognitive tests
select a test to begin. test your mental abilities.
test completed!
your final score is calculated below.
remember the number displayed. type it in when it disappears.
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memorize the highlighted tiles. click them once they hide.
watch the pattern flash and repeat the exact sequence in order.
click 'seen' if the word has been shown in this run, otherwise click 'new'.
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solve as many simple arithmetic operations as possible within 60 seconds.
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solve equations that increase in difficulty. no time limits, 3 lives.
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click the square with the slightly different color shade. 30 seconds timer.
does the font ink color match the color word? 30 seconds.
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identify the numbers hidden in the bubble dots. 5 plates total.
identify if the presented word is a real English dictionary term or fake. 20 words.
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type the flashed words as fast as possible. 30 seconds timer.
select the ink color of the word, NOT the color name itself. 30 seconds.
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press MATCH if the letter matches the one shown 2 letters back. Otherwise click NO MATCH.
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click numbers 1 to 25 in ascending order as fast as possible.
complete a 10-question logical progression evaluation to measure your IQ score.
2-minute rapid version. solve as many logical progression puzzles as possible under pressure.
cognitive age estimator. tests memory retrieval and rapid mathematical calculations.
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test deductive reasoning with word puzzles, order relationships, and syllogisms. 5 questions.
combined recall capacity test. evaluates numeric memory, spatial recall, and audio sequence memory.
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Vocabulary Size Test — Estimate Your Lexical Vocabulary Scale
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How Is Vocabulary Size Estimated?
The vocabulary size test gauges the total number of words you know in the English language. You are shown list of words ranging from very common to extremely obscure. You must decide whether the word exists in the English dictionary. The system calculates your estimated vocabulary size using statistical sampling models.
Vocabulary Size Estimates
| Estimated Word Count | Percentile Range | Lexical Profile |
|---|---|---|
| Under 10,000 words | Under Average | Basic English Communicator |
| 15,000 - 20,000 words | Average Adult | Standard Native Vocabulary |
| 25,000 - 35,000 words | Top 10% | High Lexical / Professional Level |
| 40,000+ words | Top 1% | Voracious Reader / Lexicographer |
How to Grow Your Vocabulary
The single most effective way to grow your vocabulary is active reading. Read a wide range of materials (novels, scientific articles, historical reviews). When you encounter an unfamiliar word, look up its definition and practice using it in a sentence.
Frequently Asked Questions
What is the average vocabulary size of a native English speaker?
The average native English adult knows approximately 20,000 to 35,000 words. Active vocabulary is slightly smaller than passive vocabulary.
How accurate is the vocabulary test?
It uses statistical word frequency bands to extrapolate your lexical limits, providing a highly reliable estimate of your passive vocabulary scale.