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Download the essential and most comprehensive dictionary app for dependable definitions at your fingertips. is the leading English dictionary app for iPhone – with over 2,000,000 trusted definitions and synonyms and designed and optimized for your mobile device.’s Premium app now includes ALL of our content and Upgrades (over 3,400,000 fun and helpful entries) for just one low price. It’s also ad-free!

Works offline! Install the free offline dictionary for access to definitions whenever you need them.

In addition to the trusted reference content from and, this app includes:
- Word of the Day – learn a new word each day and expand your vocabulary
- Audio pronunciations – never mispronounce another word
- Voice search – find the definitions you’re looking for anywhere, anytime
- Favorite words and recent search history - customize your recently searched word list and never forget the newest words you’ve learned
- Translator – translate into over 25 languages
- New Content Collections Carousel includes fresh content from our Blog, Slideshows and Word of the Day
- Quiz widget - test your vocabulary skills with our Word of the Day quizzes
- Word origin and history - find out where even the strangest words come from
- Spelling suggestions - not sure how a word is spelled? This app will find it for you
- Local lookups - see which words are being searched near you
- Advanced learner’s dictionary - includes extra information about word usage for English learners
- Optimized for Apple Watch!

What's New in Version 6.0.1

Thanks for all the feedback, and don’t fret, we haven’t removed Thesaurus.
TIP: Thesaurus is now called Synonyms – find it at the bottom of your search results.

Also, in this update:
• Fixed: critical bugs
• Added support for iPhone 6 and 6 Plus screens

iPhone Screenshot

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Apple Watch

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Customer Reviews

Best Dictionary App Worthy of the Home Screen

Best app for the dictionary, simple yet elegant design, recently (and finally!) updated for iPhone 6 Plus high resolution.
Also enjoy the option to access the dictionary offline, giving me the choice to either save disk space or save cellular data.

Request to bring back the Thesaurus name instead of Synonyms, it was my favorite dinosaur. /s

It's about time!

It's about time. One year after the iPhone 6/6+ release the dictionary app is finally optimized for iPhone 6/6+. With the iPhone 6/6+ optimizations I can finally appreciate the redesign. I am only giving it 3 stars because it still intermittently crashes on launch.


Can you make it so we can get definitions of slang words please like add a new 1 million words of a slang category so you don't have to download urban dictionary please because it would make it a lot more useful thank you if you do! Dictionary & Thesaurus Premium
View In iTunes
Offers Apple Watch App for iPhone
  • $3.99
  • Category: Reference
  • Updated:
  • Version: 6.0.1
  • Size: 43.7 MB
  • Apple Watch: Yes
  • Languages: English, French, German, Italian, Japanese, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
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