Advanced Dictionary&Thesaurus 4+

English dictionary with Audio

MobiSystems, Inc.

Designed for iPad

    • 4.7 • 4.2K Ratings
    • Free
    • Offers In-App Purchases



Download one of the most intuitive and easy to use mobile dictionaries with quick access to millions of words, laid out in a unique format by WordNet.

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 intelligent search features, leading to a rich word list with special language notes, 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.
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)
This app is tailored to professionals, students, and academics, as well as anyone who needs a comprehensive and authoritative dictionary of current English at work or at home.

 • Learn in style with any of the four colorful new themes – The colorful layout will turn your learning experience into an enjoyable routine. Customize your dictionary and benefit from the cheerful mood your favorite color brings you.
 • Dive right into the intricacies of the language - With new and convenient Home page, sleeker and more intuitive visual layout, as well as innovations in the speed of searches, you can get to the desired entry faster than ever.
 • Translate and learn as you speak by using Talk & Translate – Use the speech recognition & text-to-speech app by downloading it for Free from the App Store. The great synergy between the two apps will be there to help you optimize your studies.

SEARCH TOOLS - quickly find words with the clear, functional, and easy-to-use interface.
Designed to provide the most comprehensive search experience, the dictionary combines several search tools to match or predict what are you looking for, including:
 • Search autocomplete helps you find words quickly by displaying predictions as you type.
 • Keyword lookup allows you to search within compound words and phrases.
 • Camera search looks up words in the camera viewfinder and displays results in seconds.
 • Voice search helps you find an entry when you don’t know how a word is spelled.
Looking for a specific word but don't know how it's spelled? We've got you covered with our automatic ‘Fuzzy filter’ to correct word spelling, as well as ‘Wild card’ ('*' or '?') to replace a letter or entire parts of a word.

LEARNING TOOLS - engaging features that help you further enhance your vocabulary. Designed to give you freedom to structure your studies, the dictionary combines several learning tools to help you be more organized, including:
 • ‘Favorites’ that allow you to create custom folders with lists of words.
 • Recent list which helps you to easily review looked-up words.
 • Swipe-to-delete functionality in the Recent and Favorites menus.
 • Word-of-the-day option to teach you a new word every day.
Feel excited by the new word or definition you just learned? Share your discovery with friends on social media, email or any other option available on your device.

What’s New

Version 10.0.13

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes and performance improvements

Ratings and Reviews

4.7 out of 5
4.2K Ratings

4.2K Ratings

Sam I Am.... ,

Very informative. Exactly what I needed.

This app is great. I like that the app also is current in updates & fixing any glitches that are an issue in a timely manner. A lot of developers write/design apps & once they release to the public only maintain them a short time because they move on to new apps & forget about ones they’ve previously introduced. With free apps Most update & fix issues for about a 6-8 months & then move on. Even if it’s a paid app you’re lucky if they review issues & fix glitches or update it for new IOS programs after a year, but this developer’s totally different.

I also like this app is concise, but informative. I love that it gives all natures of the words background, including original origins & uses to current adaptations. I write a lot of reports & don’t like using the same words over & over. I can look up a word on the dictionary side that I’m thinking of using & it’s not exactly the word I’m looking for or I decide I want the sentence syntax to have a different flow, there’s a thesaurus to help me choose the exact right word I’m wanting to include. That feature also saves me a headache🙂, instead of me trying to come up with different words, that have the same similar meaning from memory, I can just access the thesaurus & find Exactly what I’m looking for to save me time & frustration. A Win-win as far as I’m concerned😉.

Flybo777 ,

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.

Evian I. ,

Disappointed in the Recent Upate

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

App Privacy

The developer, MobiSystems, Inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

More By This Developer

OfficeSuite docs & PDF editor
Oxford Dictionary
Talk & Translate Translator
PDF Extra: Sign, Edit & Scan
MobiDrive Cloud Storage & Sync
Collins World Dictionary

You Might Also Like

English Dictionary - Offline
Thesaurus & Dictionary
Oxford Deluxe (InApp)
Idioms and Slang Dictionary
Advanced American Dictionary
Dictionary - English