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
- Science and Rhyming Dictionaries
- Offline Dictionary + Remove ads
Or get the best value with our power pack, which includes them all!
- Updates to our Daily Crossword Puzzle to provide more viewing and playing area.
- Users who purchased the Power Pack or the Remove Ads upgrade will now have the ad-free version of the Daily Crossword Puzzle.
- Minor updates to the Word of the Day and Synonym of the Day screens.
Ratings and Reviews
LOVE. THIS. APP!!!
I use this app absolutely every day! If I’m in a meeting, or even just having a conversation with someone, and they use a word I’m not familiar with, I’ll make a mental note of it, or jot it down, and as soon as I have a chance, I immediately pull up this app and look up any words I made a note of. I do the same thing when I’m watching TV and any new or unfamiliar words come up... I press pause, and pull up the word in my amazingly handy and convenient Dictionary app! 😁💁🏼♀️ This is one of the most substantial and most frequently used apps I have, and I ALWAYS go for any upgrade they offer, which I reallyyyy COULD NOT RECOMMEND MORE! One of my FAVORITE things about this app is the *Learners* tab, which you can click on, especially if the definition is somewhat vague or unclear, and I’d say a good 70-80% of the time, at least, they have a break down of the meaning of the word, how to use it, and how to incorporate it into a sentence, etc~ which is incredibly valuable when you’re just beginning to learn and understand a word and how to use it. I just love it!!! Inevitably, I will continue on to the *Example Sentences* tab to see how the word is further used in different ways and contexts, which is also extremely helpful. It’s always surprising to me how much use I get out of this app, but it has helped me immensely to expand my vocabulary, and for that, I’m extraordinarily grateful. I wish I could give this app 10 stars!!! ✨⭐️🌟
Developer Response ,
This review is enough to make us blush, Lauren! 😊 We are truly delighted to hear that you've had such a fantastic experience with our app. Thank you so much!
User Interface is Bad
When it comes down to actually using the app, user interface is pretty bad. Non-English ads pop up and you have to guess which word will close the ad. There is no X to close it and a bunch of pop-ups open when you guess wrong. I mainly use this as a widget on my iPhone home screen, to see Word of the Day. For that purpose, it is great. However, if you want to dig deeper into the daily word, you open the app and the ad issue appears. Close the app, reopen, and try the action again. The same ad reappears. I am 24yo and have never wasted this much time on an app before.
I might buy the ad-free version, depending on the cost. But if it’s a monthly deal that costs more than $1 then that is a bad deal. My advice to the developer: ads are annoying enough, but we understand the necessary funding they provide you; please use the language per user so we can waste as little time as possible. Leaving reviews like this is time consuming and not fun. I hope this report helps to improve user interface for all users.
Developer Response ,
It sounds like you are seeing a non-English ad. We don't make the ads on our end. Instead, individual advertisers create their own ads & set the language. You should click either the "X" in the corner, or if it has buttons on the screen choose the *left* of the two buttons, as the left button is typically the close button.
If you prefer an ad-free experience, you might consider an in-app purchase that removes the ads— either the 'Remove Ads' upgrade or 'Power Pack' bundle. Thanks for using our app!
Bad word of the day trend
I used to engage this app often. When I needed a word, when I wanted to expand my lexicon and improve my parlance. I loved to see the exciting word of the day and challenge myself to use it. However, recently they have begun exhibiting boring and commonplace words of the day that I have absolutely zero interest tapping on the notification. I found myself loathing to even open the app when I need a definition because of the stupid mundane word of the day. Curse the developers for having damned me to this wretchedness. But then, one day, I tapped on the word of the day. It was something stupid, like “garden”, and the actual word of the day when I opened the app was something like “meliorism”, a word I actually didn’t know. In conclusion, this was a user error. What was happening is that I was getting notified of the synonym of the day, which supplies a simple word and several synonyms for it. Which it totally fine. Boy do I have egg on my face for that one. Rather, I have albumen and vitellus on my visage. Good app all in all.
Developer Response ,
The English language is large, and our audience is global. Our Word of the Day team works very hard to find interesting words that folks of varied backgrounds will find useful, new, or an interesting point of knowledge. Not every word will be every person's favorite, but we hope people can appreciate the word and look forward to tomorrow's word.
We are glad to hear you are again enjoying the Words of the Day and our app!
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- Dictionary.com, LLC
- 63 MB
- Requires iOS 11.0 or later.
- Requires iPadOS 11.0 or later.
- iPod touch
- Requires iOS 11.0 or later.
- Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- Apple Watch
- Requires watchOS 7.0 or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Age Rating
- © Dictionary.com, LLC 2023
- In-App Purchases
- Example Sentences $2.99
- Encyclopedia $2.99
- Power Pack $5.99
- Grammar & Tips $1.99
- Rhyming Dictionary $1.99
- Idioms & Phrases $1.99
- Science Dictionary $2.99
- Remove Ads $2.99
- Offline Dictionary $2.99