Free word game — instant play, no signup, no download
Vocabulary Builder presents words and their meanings and tests you on them. Unlike most games here it is genuinely about learning something new rather than exercising something you have — which means spacing and repetition matter more than technique.
A word is presented with its meaning.
Later, you are tested on that word.
Correct answers space the word further out.
Words you miss return sooner.
Your score reflects words retained.
Vocabulary acquisition through retrieval practice. Being tested on something is substantially more effective for retention than re-reading it — one of the most robust findings in learning research. More word games to try next: Anagram Hunt and Fill the Blank.
Use the word in a sentence of your own. Generating a context is far stronger than reading a definition.
Connect it to a word you know. Shared roots make both easier to hold.
Come back the next day. Spacing is what moves a word into long-term memory.
Do not skip words you missed. Those are exactly the ones the spacing is designed for.
The finding that retrieving information from memory strengthens retention more than re-studying it does. It is among the best-supported results in learning research.
Spaced repetition: the interval before you next see an item is shortened when you get it wrong and lengthened when you get it right.
Ten to twenty new words is sustainable for most people. More than that tends to collapse retention.
Only with repeated spaced exposure across days. A single session, however good, does not produce durable vocabulary.