English Vocabulary Proficiency Quiz
Test your English vocabulary size and CEFR level (A1-C2) with this adaptive, scientific proficiency quiz. Includes definitions, pronunciation, and scoring.
Score: 0
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Test your English Vocabulary depth.
This adaptive quiz will estimate your CEFR level based on 20 questions ranging from Basic to Academic.
Level B1
Placeholder
/pleɪsˈhəʊldə/ noun
C1
Level
0
Points
~0
Est. Words
Analysis pending...
About
This tool evaluates your English lexical resource by testing your knowledge of specific words across the Common European Framework of Reference for Languages (CEFR) spectrum, from A1 (Beginner) to C2 (Proficiency).
Unlike simple random quizzes, this application uses a Tiered Adaptive Algorithm. It begins with intermediate frequency words and adjusts complexity based on your performance. The final score is calculated using a weighted summation formula:
vocabulary test
english quiz
cefr level
language learning
word definition
Reference Data
| CEFR Level | Est. Vocabulary Size | Description |
|---|---|---|
| A1/A2 | 600 - 1,500 | Basic survival vocabulary. High-frequency words used in daily life. |
| B1/B2 | 2,000 - 4,000 | Independent user. Can discuss abstract topics and handle complex texts. |
| C1/C2 | 5,000 - 10,000+ | Proficient user. Nuanced understanding of implicit meaning and rare idioms. |
| Native | 15,000 - 30,000 | Full mastery including archaic, scientific, and literary lexicon. |
Frequently Asked Questions
This tool provides a statistical approximation. While a full philological exam requires hours, this adaptive algorithm correlates highly with standardized tests by targeting "marker words" - specific vocabulary that indicates a certain level of proficiency.
The quiz focuses on "Standard International English". The selected vocabulary is valid in both British (Received Pronunciation) and General American dialects, avoiding slang that might be region-specific.
The system detected a streak of correct answers at your current level. To accurately measure your upper limit (your 'ceiling'), the algorithm promoted you to the next difficulty tier (e.g., from B2 to C1).
Yes. Each word card features an audio icon. Clicking this triggers the browser's native Text-to-Speech engine to pronounce the word, helping you verify if you recognize it aurally as well as visually.