Did you know?

Click any word in a definition or example to find the entry for that word

Welcome to the Open Dictionary!

What is the Open Dictionary?

The Open Dictionary is Macmillan's crowdsourced dictionary, where you can suggest new words for us to add. The Open Dictionary started in 2009, and since then more than 3000 new words have been added. About half of these new words have been "promoted" to become full entries in the Macmillan Dictionary.

What kinds of word can I submit to the Open Dictionary?

We'd like you to tell us which English words are trending in your country. You can add any word or phrase which you know or which you've heard other people using – as long as it's a genuine word (not an invented one) and it is not already in the dictionary.

How do I submit a word to the Open Dictionary?

If there is a word you would like to add, you can find full instructions (including a helpful diagram) and a submission form here.

Add to the Open Dictionary

What happens after I submit a word?

We will check to see if there is independent evidence showing your word in use. If there is, we will add it to the dictionary, but we won't publish anything which may cause offence. Once your word is in the dictionary, your name will appear with it, for example, what we did with the word hypocaust.

Can I see other words that have been added to the Open Dictionary?

Yes! You can see the most recently added words in our up-to-date Open Dictionary entries list. And you can browse the complete collection of the Open Dictionary words in our chronlogical Open Dictionary archive.

What is trending in the Open Dictionary?

Are you curious about which words and meanings have made it into the news lately? With our latest Open Dictionary quiz you can test your knowledge of trending words. If you’re looking for any clues, you might find this infographic with example sentences helpful... don’t forget to share your results afterwards!