Among all the dictionaries, its hard to select best English to English Dictionary in the competitive market place. Everyday new words coin and added to the dictionary. By analyzing the dictionary size, paper quality, software quality, word entries, definition and explanation, pronunciation, illustration, etymology , user-friendly interface and by the user reviews we selected the Top 5 English to English Dictionary.
Top 5 English to English Dictionary –
1. Oxford Advanced Learner’s Dictionary
2. Longman Dictionary of Contemporary English
3. Cambridge Advanced Learner’s Dictionary
4. Merriam Webster’s Collegiate Dictionary
5. WordWeb Pro Dictionary
English to English Dictionary – 1: Oxford Advance Learner’s Dictionary 8th Edition
The Oxford Advanced Learner’s Dictionary, first published 66 years ago. It is the largest English-language dictionary from Oxford University Press aimed at a non-native people. By user review Oxford Advance Learner’s dictionary is the best English to English Dictionary.

Key Features of Oxford Advance Learner’s Dictioary:
• 600,000 words, 3 million quotations, over 1000 years of English.
• NEW 1,000 new words and meanings covering technology, lifestyle, slang, the economy (carbon trading, citizen journalism, malware, social bookmarking, stack it, staycation, X factor).
• NEW Oxford 3000™ Plus shows students the most important words to know in English and the most important meanings of those words.
• NEW Academic Word List words marked.
• NEW 32-page Oxford Writing Tutor helps students plan, write and review their written work.
• NEW Topic Collocation notes and synonym information enables students to extend their vocabulary to over 7,500 words.
• NEW 64-page Visual Vocabulary Builder with colour photos and illustrations.
• NEW Oxford iWriter on CD-ROM an interactive tutor to help students plan, write and review their written work.
• NEW Interactive whiteboard-friendly CD-ROM.
Additional Info about Oxford Advance Learners Dictionary
NEW interactive whiteboard-friendly CD-ROM includes:
• The Oxford iWriter an interactive tutor to help students plan, write, and review their written work.
• Thesaurus, Cultural Guide and Word origins integrated with the A-Z create a complete reference tool.
• Example bank with 1,000s of extra example sentences.
• Topic vocabulary banks make it easy to look up and learn words used in society and politics, science and technology, culture, and education.
• Dictation exercises in a variety of accents to develop listening skills needed for passing exams.
• Help with learning and teaching dictionary skills.
• Exercises to practice and learn the Academic Word List.
• NEW unlimited online access with audio:
• Access to the complete A-Z dictionary.
• Hear all headwords spoken to practice pronunciation.
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English to English Dictionary – 2: Longman Dictionary of Contemporary English, 5th Edition
The LONGMAN Dictionary of Contemporary English 5th Edition, is the most comprehensive dictionary ever. LDOCE is also the best Active English Learning tool.
LONGMAN Dictionary of Contemporary English 5th Edition
Key Features of Logman Dictionary Of Contemporary English:
* 230,000 words, phrases and meanings.
* 165,000 examples based on real, natural English
* Clear definitions written using only 2,000 common words;
* Over 18,000 synonyms, antonyms and related words;
* Over 65,000 collocations;
* The top 3,000 most frequent words in spoken and written English;
* New Integrated Collocations Dictionary. Over 65,000 collocations will improve students fluency;
* New Integrated Thesaurus. Over 18,000 synonyms, antonyms and related words will improve vocabulary range;
* NEW Register Notes focus on the differences between spoken and written English;
* Academic Word List highlighted;
* Grammar and warning notes ensure that students avoid common errors;
* New text design ensures students can find information fast.
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English To English Dictionary – 3: Merriam Websters Collegiate Dictionary, 11 Edition
The Merriam Webster Collegiate Dictionary, NEW 11th Edition one of the top English to English Dictionary. Best features, user interface, huge entries makes its best dictionary in the competitive market.

Key Features of Merriam Webster Collegiate Dictionary:
- 225,000 definitions,
- 115,000 audio pronunciations,
- 340,000 synonyms & related words,
- 21 search options
- Win/Mac CD-ROM for local electronic access
- Free one-year online subscription
Writers, students, or people who just like to write precise yet imaginative emails — Merriam-Webster’s Collegiate Dictionary and Thesaurus is the perfect companion for all of your writing and reading endeavors.
The most impressive aspect of this program is the number of ways that you can search for a word. Search by definition, synonyms, homophones, rhyming words and even by a particular year. And, if you’re not sure how to pronounce your new–found word, you can listen to the pronunciation
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English to English Dictionary – 4: Cambridge Advance Learner’s Dictionary
The Cambridge Advance Learner’s Dictionary is the best English to English dictionary. Most user find it user friendly, rich in words with definition.

Key Features of Cambridge Advance Learner’s Dictionary:
- The clear definitions and prominent guidewords help you to find the meaning that you want quickly and easily,
- More pictures and illustrations help highlight variations in meaning that are essential for the advanced student’s progression.
- Cambridge Advanced Learner’s Dictionary CD-ROM has a fresh new design,
- Its easier to use.
- Listen to every word in British and American English and
- Even record your own pronunciation and play it back.
- Add your own notes to any entry in the dictionary too.
- Interactive exercises including exam practice and real past papers for IELTS, FCE, CAE, CPE and BEC.
- Extra collocation information and thousands of example sentences.
- UNIQUE! Cambridge SMART thesaurus turns the dictionary into a thesaurus at the click of a button.
- QUICKfind, a mini pop-up version of the dictionary, gives you instant definitions when surfing the web or reading on screen.
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English To English Dictionary – 5: WordWeb Pro Dictionary
WordWeb Pro Dictionary is one of the most popular dictionary. Simple and easy uses, user friendly interface, hotkey, The Latest Version WordWeb Pro 7.02 is and ultimate English to English Dictionary based on user reviews. WordWeb is a powerful free English thesaurus and dictionary. Find definitions and synonyms, as well as various sets of related words, with one-click look up in almost any Windows program. The database has over 150 000 root words. If you are online you can also easily check web references such as the Wikipedia encyclopedia.

Key Features Of WordWeb Pro Dictionary:
- Add optional third-party dictionaries in separate tabs
- 70 000 audio pronunciations
- Clear text pronunciations with syllables
- One-click look up from almost any program, including MS Word
- Tab pages to quickly check web references
- Bookmark words
- Highlights commonly used widely-understood words
- Links between sounds-like and often-confused words
- Find words matching a pattern
- Add definitions to the database
- Solve and find anagrams
- Copy results to the clipboard
- Search for words in a large number of optional extra word lists
- Add your own custom glossaries
- Import and export custom definitions and glossaries
- Configure for American, British, Canadian, Australian or Asian English
- Option to hide (default) or flag vulgar and offensive related words
- Reverse definition (full text) search
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English To English Dictionary is the best learning tool for the native and also non-native Audience. This Top 5 English Dictionary provides ultimate definition, huge words, elaboration and illustration or words with pictures, etymology and the pronunciation of each words makes them best English to English Dictionary. Most of them compatible with desktop PC, laptop, Mac platform. Some of them has also Android and iPhone edition. Now get your Best English to English Dictionary and Make yourself fluent in English.