Download the number one free dictionary app with English language learning tools and free word games built for every level of learner.
With more than 2 million trusted definitions and synonyms plus word puzzles, language quizzes, and spelling quizzes, this English dictionary and thesaurus app for iPhone is optimized with your mobile device in mind to help you learn English or improve your English vocabulary.
Flip to dark mode to give your eyes a break, or stick to the traditional set-up. It even works offline! Install the offline dictionary for access to definitions and synonyms whenever and wherever you need them — no bulky books necessary.
In addition to the trusted reference content from Dictionary.com and Thesaurus.com, this education app includes:
Word Puzzle ► Love crossword puzzles and anagrams? You’ll flip for our word puzzle! Unscramble the letters, and cash in your coins for an extra boost. Want more word game fun? Improve your vocabulary with fun spelling quizzes and vocabulary challenges.
Word of the Day ► Learn a new word each day and expand your vocabulary education.
Synonym of the Day ► Can you pick the correct synonym for a word? Keep your vocabulary sharp with our daily synonym challenge.
Audio pronunciations ► Never mispronounce another word.
Synonyms ► Get thesaurus content alongside your dictionary definitions.
Voice search ► Find the definitions you’re looking for anywhere, anytime. The app even offers up English spelling help. Not sure how a word is spelled? Say it out loud, and this app will find it for you.
Grammar help ► Get grammar tips, word usage, and more to improve your writing.
Editorial articles ► Explore editorial content for features on words, the origins of our language, and the nuances that make English so complicated and unique.
Favorite words and search history ► Customize your recently searched word list, and never forget the newest words you’ve learned.
Learner’s dictionary ► Includes extra information about word usage for English learners.
Dictionary shuffle ► Think you know ALL the definitions? Prove it with Dictionary Shuffle, which chooses a word at random and brings you to the definition.
A-Z Dictionary ► What’s more exciting than ... wait for it … browsing the Dictionary?! We’ve now made it even easier, with the A–Z Dictionary.
Optimized for Apple Watch!
Get even more from your app with our upgrades:
- Example Sentences
- Idioms and Phrases
- Medical, Science, Rhyming Dictionaries
- Offline Dictionary + Remove ads
Or get the best value with our power pack, which includes them all!
Here’s a grammar pro-tip: update your app!
Download our latest version for grammar tips, tricks, and tools for top-notch writing.
Ratings and Reviews
Hi guys this is such a good app I love everything and I have no complaints at all. I really how you structured your app and the way the keyboard is so big which is a good thing!!!!!!! You guys did so well making this app!! Their is no app quite like this one that is so good as this app!!!
Good job for making this app!!!!
Thanks for reading this review!
Developer Response ,
Delighted to hear how much you've been enjoying our app. Thanks for choosing our Dictionary.com app!
Your new update is terrible 🤬
Hate it, hate it hate it. The new version is too confusing and fussy on the eye. Too irritating to use. Will probably find a better app. You also ignore the British and Australian spellings. These are the correct ones. The American versions are a corruption. Why not accept both?
Having definitions and synonyms colour coded is good, but three columns with the text wrapped is painful on the eye and extremely confusing. Please put them back into one column, or two if you must. Three is too much for an iPhone. It is essential that you acknowledge the correct British spellings of words. It is American imperialism at its worst not to. There are hundreds of millions of people round the world who use the Queen’s English and do not know what the bastardised American spellings are. It would only be to your benefit to rid yourself of this Americocentric image you currently have.
Developer Response ,
Thanks for sharing your thoughts about our American English Dictionary, and the latest update on our app.
To be clear, we are an American English dictionary, and do currently focus on the American English dictionary entries. Our focus is not a matter of 'American Imperialism', rather, that we are an American company, with an American English corpus of words to work from, and lexicographers who specialize in American English; furthermore, we have limited resources and do have to focus our business model. We hope you can appreciate that our small team is hard at work managing and updating the entire dictionary and thesaurus, building and maintaining our website and apps, answering our customers (like you), and creating the content our customers so enjoy. While we may offer some limited content, at times, we cannot commit to expanding more broadly to support an entire dictionary corpus of words from British-English, Australian-English, South African-English, Irish-English, Indian-English, or the myriad other delightful ways people around the world speak English!
That said, if you are looking for a British English Dictionary, we would take a moment to recommend our sister site, Lexico.com. Lexico is a dictionary partnership between Dictionary.com and Oxford University Press, where all the dictionary content is provided by Oxford Languages Lexicographers. While Lexico does not have a mobile app, you may find this website to be a better fit for your needs if our American English isn't to your preference, and should you prefer a British English dictionary.
Finally, we do appreciate your thoughts about the recent updates to the visual experience on our app. We appreciate your comments, particularly those about the synonyms and color coding. We are sorry to hear of the confusion with viewing, given the text wrapping. We'll definitely add this to your prior comments about the changes, and share them with our app team.
Thanks for sharing your perspective, and for using our app.
Feedback for ads
Self confessed word nerd here 🙋🏽♀️Love the app and have used it almost every day for years. One thing I’ve noticed lately is that the ads are becoming more aggressive. Unfortunately because I often work in the quiet study area of my local library, I have had the embarrassing situation of going to look up a word and having loud ads blaring at me and disturbing the other patrons. I wonder, from a marketing perspective (yes, that is part of my job!) if due to the nature of the target audience you have (and the likelihood they use office/ quiet spaces when engaging with your app), some parameters on audio content could be introduced? Thanks!
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- Dictionary.com, LLC
- 39.9 MB
- Requires iOS 11.0 or later.
- iPod touch
- Requires iOS 11.0 or later.
- Requires a Mac with Apple M1 chip and macOS 11.0 or later.
- Age Rating
- © Dictionary.com, LLC 2018
- In-App Purchases
- Example Sentences $4.49
- Encyclopedia $4.49
- Grammar & Tips $2.99
- Medical Dictionary $4.49
- Power Pack $9.99
- Rhyming Dictionary $2.99
- Idioms & Phrases $2.99
- Science Dictionary $4.49
- Remove Ads $4.49
- Offline Dictionary $4.49
Up to six family members will be able to use this app with Family Sharing enabled.