🧠Cerebite

Vocabulary Size Test

Check every word whose meaning you know. Be honest — a few made-up words are hidden in the list to keep everyone truthful.

Your vocabulary is about
0
words

Tap a word to mark it as known. When you're done, press "See my result".

How the estimate works

The Spanish lexicon is sampled in frequency bands — from the 1,000 most common words down to extremely rare ones. You see a few random words from each band; the share you know in a band estimates how much of that whole band you know, and adding the bands up gives your total. Checking made-up words lowers the estimate, so honesty pays. Every retake draws a fresh random sample, so your number may vary by a couple of thousand — that's normal for a 2-minute estimate.

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Frequently asked questions

How accurate is this vocabulary test?
It's a statistical estimate from a 2-minute sample, not a full exam — expect a margin of a few thousand words. Taking it several times and averaging gives a steadier number. Research puts adult native speakers at roughly 20,000–35,000 words, which matches what this method reports.
Why are there made-up words in the list?
They're an honesty check. Self-reported tests are easy to inflate by checking everything — but fake words catch that, and each one you check lowers your estimate. If you avoid them all, your result is trustworthy.
What counts as "knowing" a word?
Check it if you could give at least one meaning of the word when you see it. You don't need to spell it from memory or use it actively — recognizing the meaning is the standard used by vocabulary researchers.
How many Spanish words do I need to hold a conversation?
Frequency research is encouraging: the 1,000 most common Spanish words cover the large majority of everyday speech, and around 2,000–3,000 lets you handle most daily conversations comfortably. Reading newspapers and novels without a dictionary takes considerably more — which is what the higher bands of this test measure.
Is Spanish vocabulary easy to learn for English speakers?
Easier than most languages: both draw heavily on Latin, giving thousands of near-identical cognates like familia, importante and universidad. Watch out for false friends, though — embarazada means pregnant, not embarrassed, and éxito means success, not exit. Cognates give you a head start; steady study does the rest.
How many new Spanish words should I learn per day?
Most learners sustain 5–15 new words a day without burning out; consistency matters far more than big bursts. Prioritize high-frequency words first — they appear constantly, so daily life keeps reviewing them for you — and retake this test monthly to see the habit translate into a bigger estimate.