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
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!
Corporal (Ret.) Ralph D. Fiorenza, Pa State Police
In my life, and in my life’s work, I have long labored with speaking, writing, and when preparing factual reports of important incidents and events.
It has always been my effort to convey my thoughts to others, official or otherwise, succinctly and with utter accuracy. In the process, I learned a wide vocabulary is the foundation for providing clear focus about any occurrence whether it pertains to personal issues or creating official reports for myriad purposes.
Making it a point to accomplish this, I purposefully delved into dictionaries and thesauruses not to impress and amaze, but rather to be exceptionally lucid and to provide a view of things in their true and relative importance. Hence, I endeavored to make use all media that enhanced my vocabulary. While there is always room for improvement, I take satisfaction in knowing that my store of words is ample to bring about accuracy to my spoken and written words. I owe much to Merriam-Webster involving this persistent activity, for it has served me well.
Dictionary of the day is awesome!
Dictionary of the day is an effective and fun way to easily increase your vocabulary or remind you of words that might have slipped your mind over the years or for that moment when you are distracted and do not want to wake up slapping your forehead at 3AM. Also, one of the biggest benefits is that I am usually able to sneak in at least 3-5 other new/remembered words after reading the daily one. This is why I initially got the app. However, after now using this Dictionary app every day over the course of years; I have found it to be helpful, efficient, easy to use and can be fun and diverting. The reasonable price is the cost of an high calorie, high cholesterol, fattening and unhealthy CappaFrappaAnywayYouLikeItCino and once you enjoy that drink it will be gone forever. But this wonderful Dictionary/Thesaurus with all of it’s content will be with you forever. Considering other options that I have personally used; such as MW, et. al., I most highly recommend this app.
Developer Response ,
Thank you so much for your great review! We really appreciate your kind words!
It means so much to us that our app serves you well. If you ever experience any issues with our app, please reach out to our support team for help! We are here for you!
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
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The following data may be collected but it is not linked to your identity:
- Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
- Dictionary.com, LLC
- 39.9 MB
- Requires iOS 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.
- Age Rating
- © Dictionary.com, LLC 2018
- In-App Purchases
- Example Sentences $2.99
- Encyclopedia $2.99
- Medical Dictionary $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
With Family Sharing set up, up to six family members can use this app.