[iPhone God App] It was found using the Collins English Dictionary and Thesaurus Complete & Unabridged actually

The Collins English Dictionary 2011 Complete & Unabridged and the Collins Thesaurus of the English Language 2011 in a software bundle offering a complete language and reference solution for writing, for work, for study, because you want to express yourself well, or just for the love of words.

* Search over 500,000 English words, references and examples in this 30th anniversary edition of the Collins’ flagship dictionary.
* Let the Thesaurus help you find that tantalizing solution to tricky language clues with over 377,000 synonyms and antonyms.

Dictionary Features:

* Latest vocabulary, based upon Collins’ 2.5 billion word database
* 6,000 biographical entries
* Key expressions and example sentences
* Usage notes give advice on using the right word in the right place
* Cultural notes on life and language
* Thousands of etymologies trace the roots of modern English
* A clear design that makes this dictionary accessible and easy to use

Thesaurus Features:

* Key synonyms for each sense, offering the most helpful alternative
* Opposites provide you with another way of expressing yourself
* A wide range of Idioms and phrases included
* Related words to help you expand your vocabulary
* Cross-references
* Quotations add wit, sparkle and originality
* Illustrative examples from real English show how the entry word is used
* Usage and regional labels to help you identify areas of usage
* Extensive coverage of English as an international language
* 550 Subject word lists add an extra dimension to your vocabulary

A search tool

Featuring autocomplete search to help you find words quickly by seeing search predictions that might be similar to the search terms you're typing. The search also allows various search options as:

* A ‘fuzzy filter’ when you are not sure of the correct spelling of a word.
* A ‘keyword’ search for finding key words within compound words.
* A wild card search facility which can replace a letter or a group of letters.

A learning tool

The dictionary app includes a number of features which help you to grow your vocabulary further:

* A ‘Favorites’ feature allows you to create your own categories and lists of words from the extensive library, which includes all cross-curriculum words.
* History list to help you easily review the last visited words.
* Word of the day to help you learn a new word each day.
* Fun and engaging word games like 'Hangman', 'Word scramble' and 'Anagrams' give the opportunity to use newly learned words.