The WordNet concept had become the staple of quality language apps!
* Straightforward and precise definitions of over 140,000 with more than 250,000 links and 1.4 million words
* Synonyms, antonyms, similar and related words to help improve your writing and speech
* Hypernyms (more generic words), hyponyms (subordinate words) and meronyms (part names)
* Examples illustrate how words are used and show typical constructions and collocations
* Offline audio support (internet connection is NOT required)

 • NEW! With the addition of a convenient Home page, a sleeker and more intuitive visual layout, as well as innovations in the speed of searches you can delve right into the intricacies of English faster and easier than ever!
 • NEW! Translate and learn as you speak by using Talk & Translate– A speech recognition and text-to-speech app separate from this dictionary, which you can download for Free from the App Store. Whether you’re travelling or simply want to optimize your study of English, the great synergy between the two apps will be there to help you.

SEARCH TOOLS – effortlessly find words using a clear, functional, and easy-to-use interface. The integrated search tools activate automatically the moment you start typing:
* Search autocomplete helps find words quickly by displaying predictions as you type
* Keyword lookup allows you to search within compound words and phrases
* An automatic ‘Fuzzy filter’ to correct word spelling, as well as ‘Wild card’ ('*' or '?') to replace a letter or entire parts of a word
* Camera search automatically searches for words in the camera viewfinder and displays results
* Searching for words has never been easier with the included voice search (requires internet connection)

LEARNING TOOLS – engaging features that help you further enhance your vocabulary:
* ‘Favorites’ feature to create custom folders with lists of words from the extensive library
* ‘Recent’ list to help you easily review looked-up words
* ‘Word of the day’ section to help expand your vocabulary every day
* Fun and engaging word games like ‘Hangman’, ‘Word scramble’ and ‘Anagrams’ give you the opportunity to use newly learned words

Entirely revised and updated to include the most comprehensive and accurate picture of the English language today, the Advanced English Dictionary and Thesaurus represents the authority of dictionary apps. The new edition is organized in an innovative and convenient approach, which makes it ideal for anyone who needs a comprehensive and authoritative dictionary of current English.

This is the most initiative and easy to use mobile dictionary which allows quick access to millions of words, laid out in a unique format. The intelligent search features, leading to a rich word list, together with the special language notes, including cross-curriculum words and the prompt navigation all contribute to your unique user experience. Nouns, verbs, adjectives and adverbs are grouped into sets of cognitive synonyms, interlinked by means of conceptual-semantic and lexical relations. In addition to the straightforward definitions the dictionary shows how each word is linked to other words in terms of synonyms, opposites and similar words, but also hyponyms and hyperlinks within the group.

If you have any questions, feedback or suggestions please contact us directly at

What's New

Version 10.0.4

* Beautifully integrated for iPhone X
* Keyboard search optimizations
* Bug fixes and improvements

Ratings and Reviews

4.7 out of 5

879 Ratings

879 Ratings

Disappointed in the Recent Upate

Evian I.

I have greatly enjoyed using this app for over 8 years, being able to access it from anywhere at any time without having to depend on the Internet or wi-fi. The word games provide an excellent means of learning new words and keeping current with changes to familiar words. Being able to check spelling and definitions of words during a game has been helpful. The pronunciation feature is a plus, enabling me to check a pronunciation "on the fly." However, with the recent update, I can no longer access the dictionary or any of its wonderful components without access to the Internet, which is disappointing, as sometimes the Internet is blocked at some locations or is simply not available. I am disappointed that you have chosen to change your app so that it, in essence, denies access to users who may not have or cannot access the Internet. I am sure I am not the only person who would appreciate it if you would eliminate that restriction. - The Thinker

Correction and Apology for my earlier “WARNING!”


I accidentally made a severe critical review of this developer. Another developer, NOT MobiSystems, Inc., had left users high and dry by not updating an expensive dictionary app to be compatible with iOS 11. I could not write a critical review because their app had been removed from the app store. I downloaded this app (incorrectly thinking it was by the same developer) to have a platform to complain about the developer. I now realize MobiSystems, Inc., is not the developer of the app I was aggravated about. I am very sorry for my mistake.

Newest update:


Newest update: This is the second time to write this this morning. I’m getting use to this update and would have given it an additional star except that it keep sending me the same update word when I fire up my screen, but the wor never changes from “winter pea” yet the real update does change. If I hit send and it doesn’t send and wipes outLike the last one a few minutes ago I may look for a better app. There is no other way that I can see to report the glitch. Maybe some one related to this app will fix it.

Developer Response

Thank you for the comment. Please bear in mind that the redesign of the app was required due tot the updates of the iOS. We, as a developer, need to follow the trends in mobile progress and provide new features within the UI.


MobiSystems, Inc.
197.3 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Catalan
Age Rating
Rated 4+
© 2017 MobiSystems, Inc.
In-App Purchases
  1. Advanced English Dictionary and Thesaurus $0.99
  2. Advanced English Dictionary and Thesaurus - Voice Search $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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