Best 24 English Dictionary Apps for Android, iOS, and Online (2021)

Here are some of the best English dictionary apps for you. You can download and install them on your mobile phone or tablet.

All these apps are completely free and you can download them on your Android mobile phone & tablet and iPhone & iPad.

Here they are:

A) Android English Dictionary Apps

1) English Word Meanings & Definitions (Android)

2) Cambridge Advanced Learner’s Dictionary, 4th ed. (Android)

3) Macmillan English Dictionary (Android)

4) Free Dictionary (Android)

5) Dictionary – Merriam-Webster (Android)

6) Collins Dictionary Free (Android)

7) Longman Dictionary English (Android)

8) Oxford Dictionary of English (Android)

9) English Dictionary – Offline (Android)

10) Offline English Dictionary (Android)

B) iOS English Dictionary Apps

11) English Words (iPhone and Apple Watch)

12) Oxford Dictionary of English (iPhone and iPad)

13) Merriam-Webster Dictionary (iPhone, iPad, and Apple Watch)

14) Cambridge English Dictionar‪y‬ (iPhone and iPad)

15) English Dictionary – Offlin‪e (iPhone and iPad)

16) Advanced Dictionary & Thesauru‪s (iPhone and iPad)

17) English Dictionary – LDOC‪E (iPhone and iPad)

C) Online English Dictionary Websites

18) Cambridge English Dictionary (Online)

19) Macmillan Dictionary (Online)

20) (Online)

21) Collins Dictionary (Online)

22) Lexico (Online)

23) Merriam-Webster (Online)

24) The Free Dictionary (Online)

English Dictionary Apps

1) English Word Meanings & Definitions (Android) app has over 2 million definitions & synonyms. You can expand your vocabulary with the word of the day.

You can listen to vocabulary pronunciation. You can also quiz yourself and study.

With Synonym of the day, you can learn new Synonyms. There is a word puzzle so you can play word games. You can even voice search to find the definitions you are looking for.

You can also get grammar tips, word usage audio pronunciations, wordplay, English spelling help, and a learner’s dictionary.

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2) Cambridge Advanced Learner’s Dictionary, 4th ed. (Android)

Cambridge dictionary has over 140,000 words, phrases, meaning, and examples.

Every dictionary entry has thesaurus sections that show related words, phrases, synonyms for each meaning.

Cambridge Advanced Learners Dictionary

This dictionary is ideal for IELTS, BEC, Cambridge English: First, Advanced, and Proficiency exam preparation.

Some of the features of the Cambridge Advanced Learner’s Dictionary, Fourth Edition (CALD) are:

It has British and American English audio pronunciations, recorded by native speakers.

It has flash card quiz to help you memorize new words. A table of English irregular verbs provides a useful reference resource.

CALD will understand and find a word from any grammatical form.

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3) Macmillan English Dictionary (Android)

Macmillan English dictionary has been created by 2 teams of 100 lexicographers from Britain and America.

Macmillan English Dictionary

It has over 1000,000 words collected from contemporary written and spoken sources. There are over 80,000 examples of words in use.

Only 2,500 words used to define all entries. It also has 7,500 words in red that helps learners to grasp the core words necessary to speak and write fluently.

This dictionary app has all the content of the print dictionary. You can also search for idioms and phrasal verbs.

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4) Free Dictionary (Android)

You can find every word, millions of definitions from top dictionaries, even offline.

It has a full thesaurus with synonyms and more. You can learn how to say a word with audio pronunciations.


You can learn something new with word of the day, idioms, games, and 40+ languages. This is one of the most user-friendly dictionaries and thesaurus with over 10 million downloads.

This free dictionary has sourced from Webster’s dictionary, Roget’s thesaurus, The American Heritage Dictionary, and more.

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5) Dictionary – Merriam-Webster (Android)

Merriam-Webster is one of the best Android apps for English language reference, education, and vocabulary building.

Dictionary Merriam Webster

It has Vocabulary-building quizzes, a fast, fun way to learn new words and test your vocabulary.

You can also use voice search to look up a word without having to spell it. This has integrated thesaurus, synonyms & antonyms are included.

There are example sentences to understand how a word is used in context. Audio pronunciations voiced by real English speakers.

For tablets, there is a scrolling index that lets you browse the entire dictionary.

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6) Collins Dictionary Free (Android)

Collins dictionary is both comprehensive and authoritative with over 123,000 words and 200,000 definitions based on the Collins word web.

Collins Dictionary Free

This dictionary app has search autocomplete that helps find words by displaying predictions as you type.

It also has camera search to look up words in the camera viewfinder.

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7) Longman Dictionary English (Android)

Longman Dictionary is a clear and comprehensive dictionary with 109,000 words, meaning, and phrases, including words from the Academic word list.

Longman Dictionary English

59,000 example sentences, showing thousands of academic words and collocations. It has clear definitions written using the Longman American Defining.

It has an integrated thesaurus that explains thousands of synonyms and antonyms. This dictionary can help you enhance your presentation and essay skills.

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8) Oxford Dictionary of English (Android)

Oxford English dictionary is backed by 150 years of research behind it. It is considered as one of the highest authorities in the study and reference of the English language.

Oxford Dictionary of English

It is useful for students preparing for the ACT, SAT, IELTS, TOEFL exams, and more.

This Oxford dictionary app has over 350,000 words, phrases, and meanings from the latest 2020 word database from Oxford University Press.

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9) English Dictionary – Offline (Android)

This free offline English dictionary is based on English Wiktionary. It is fast, easy, and has a functional user interface, optimized also for the tablets.

This offline dictionary has more than 364,000 English words, definitions, and a large number of inflected forms.

English Dictionary Offline

The app is about 40MB in size and has over 10 million downloads.

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10) Offline English Dictionary (Android)

This dictionary has both online and offline word pronunciations. It has the most advanced dictionary.

Offline English Dictionary

It keeps track of all your search history. It has over 600,000 definitions from the English Wiktionary.

It includes more than 200,000 idioms and phrases. It also has audio pronunciations (human voice and robot voice). It corrects the spelling of words when you mistype any word.

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11) English Words (iPhone and Apple Watch) iOS app has over 2 Million definitions and synonyms. You can find word of the day, vocabulary pronunciation, play word games, get synonym of the day, quiz yourself, and more. English Words iPhone and Apple Watch

This is one of the best dictionary apps to increase your vocabulary. This dictionary works offline and also has a dark mode. It includes trusted reference content from and

12) Oxford Dictionary of English (iPhone and iPad)

Oxford dictionary of English iOS app has over 350,000 words and definitions. It has got audio pronunciations for each word, so you can learn to pronounce when you are finding its meaning.

Oxford Dictionary of English iPhone and iPad

You can find words using voice search, it even works when you don’t type in the correct spelling of a word. Apart form that, it also has camera search, just click a picture of a word and find out its meaning. Expand your vocabulary with Word of the day.

13) Merriam-Webster Dictionary (iPhone, iPad, and Apple Watch)

Merriam-Webster iOS dictionary app has over 225,000 definitions. It has free offline search and you can quickly switch to thesaurus.

Merriam Webster Dictionary iPhone iPad and Apple Watch

There are many new vocabulary-building quizzes. You can learn new words and also test your vocabulary. The audio pronunciation of words is voiced by English speakers. There are example sentences to understand how a word is used in context.

14) Cambridge English Dictionary‬ (iPhone and iPad)

Cambridge English Dictionary iOS app has over 140,000 words, phrases, examples, meaning, British and American English word pronunciations.

Cambridge English Dictionar‪y‬ iPhone and iPad

This Advanced Learner’s Dictionary is used by English learners worldwide. Every dictionary entry has thesaurus sections that show related words, phrases, and synonyms for each meaning. Informed by the Cambridge International Corpus, the dictionary is ideal for IELTS, BEC and Cambridge English: First, Advanced, and Proficiency exam preparation.

15) English Dictionary – Offline (iPhone and iPad)

You can use this free iOS Dictionary app to find thousands of words by alphabet. You can learn grammar, study your cards, find out list of words, vocabulary topics, play games, and more.

English Dictionary Offlin‪e iPhone and iPad

There are more than 172,000 words, 180,000 senses, and 49,000 sample sentences. You can learn English with the lessons of grammar included in the dictionary:

  • Comparative and Superlative Adjectives
  • Singular and Plural Nouns
  • Count Nouns and Uncountable Nouns
  • Possessive Nouns
  • Pronouns
  • Action Verbs
  • Adjectives
  • Adverbs
  • Active / Passive Verb Forms
  • Mood for Grammar
  • Auxiliary Verbs Be, Do, Have
  • Auxiliary Verbs Will/Would and Shall/Should
  • Auxiliary Verbs Can/Could and May/Might/Must
  • Prepositions On, At, and In
  • Prepositions Of, To, and For
  • Prepositions With, Over, and By
  • Indefinite and Definite Articles
  • Interjections
  • Capitalization
  • Conjunctions
  • Conditionals
  • Irregular Verbs
  • Verb Tense, and more

16) Advanced Dictionary & Thesaurus (iPhone and iPad)

With this free Advanced Dictionary and Thesaurus iOS app, you can get over 1.4 million definition of words. The intelligent search featur gets you a rich word list with special language notes, cross-curriculum words, and prompt navigation.

Advanced Dictionary Thesauru‪s iPhone and iPad

Nouns, verbs, adjectives, and adverbs are grouped into sets of cognitive synonyms, interlinked by means of conceptual-semantic and lexical relations. Apart from the word meanings, you can also get synonyms, opposites, and similar words, but also hyponyms and hyperlinks within the group.

17) English Dictionary – LDOC‪E (iPhone and iPad)

Longman Dictionary of Contemporary English (LDOCE) is a free iOS English Dicitionary app for iPhone and iPad. LDOCE iOS app has over 2,000,000 trusted definitions and synonyms.

English Dictionary LDOC‪E iPhone and iPad

It has 165,000 corpus-based examples of natural English shows how words in context are used. It also has 230,000 words, phrases, and meanings. This app has an English dictionary, Thesaurus dictionary, collocations dictionary, word of the day, audio pronunciations, quiz widget, and more.

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About N Kamal Hasa

I am Kamal Hasa N from Bengaluru, India and I am the owner of I am a professional blogger since 2011. I hope you have a great time on NPXP and a good day.

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