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Best English Dictionary Apps for Students and Teachers

Best English Dictionary Apps for Students and Teachers

The English language contains millions of words, but the average speaker only uses a small fraction of the current terms and phrases. Besides spelling and understanding new words, a dictionary can help users expand their English and improve their grammar.

For children, dictionaries are an invaluable learning tool. For many kids, a dictionary is their first introduction to resource material and a dictionary can help them learn new words and expand their vocabularies.

Looking for a dictionary app? Check the list of best dictionary apps for Android and iOS devices that will help teachers and students.

Merriam-Webster Dictionary

( Android, iPhone, iPad )

Merriam Webster dictionary app is one of the most reputed dictionaries all over the world. This app includes features such as voice search, audio pronunciation, example sentence of the word, word of the day and an integrated thesaurus including synonyms and antonyms.

Brought to you by the brains behind America’s most popular and widely respected dictionary, Merriam-Webster, this multifaceted dictionary app packs all the features required for a wide range of educational purposes, with self-education not being an exception. Whether you’re a copywriter with English as your second language striving to build your vocabulary or you’re an enthusiastic beginner, Merriam-Webster will not let you down. Vocabulary-boosting quizzes, “Word of the Day”, an integrated thesaurus equipped with synonyms and antonyms, quick definitions, and example sentences are just a few of Merriam-Webster’s tremendously handy educational tools.


Dictionary.com Pro Learn Words

( Android, iPhone, iPad )

Dictionary.com app is one of the leading free English dictionary app. It does not require internet connection as it works offline. Dictionary.com has a humongous database containing more than 2,000,000 definitions, antonyms and synonyms, and has all the tools you need for constantly boosting your English knowledge.

Dictionary.com app is suitable for older elementary students and adults alike. There’s audio pronunciation for each word, translations for over 30 languages, detailed word origin descriptions in case you are into etymology, a plethora of language blogs, and an advanced learner’s dictionary, to name just a few. 

With the “Word of the Day” and the “Word of the Day Quiz” features, you can add a new item to your vocabulary every day and at the same time, keep your brain in top shape. If you’re still hungry for more, you can get access to several advanced features via in-app purchases including a slang dictionary, an immense collection of idioms and phrases, example sentences, and medical, science, and rhyming dictionaries.



The Cambridge School Dictionary app is the perfect study companion for students studying other subjects through English.It includes vocabulary from all the main CLIL and International GCSE topics - from biology to economics and from IT to literature - to give you the confidence and support you need to learn in English, whatever the subject.



Collins English Dictionary Unabridged

( Android, iPhone, iPad )

Collins English dictionary app is intended for grades 12+ and general business users. It is stuffed full of over 500,000 words, and also covers world, regional, and dialect English. Collins English Dictionary Unabridged includes the latest vocabulary based on their database of over 2.5 billion words that is constantly updated. 


Oxford Dictionary of English app is the flagship British English dictionary from Oxford. It offers the most comprehensive coverage of English from around the world in any one volume dictionary. It is completely revised and updated to include the very latest vocabulary, with over 350,000 words, phrases, and meanings.


Dictionary Pro

( Android )

The Dictionary is one of the best free dictionary app that features a black-and-white page full of content, from a word of the day to horoscopes, daily quotes, and lots of word games. The app pulls dictionary and encyclopedic content -- including legal, medical, financial -- from numerous respected sources such as McGraw-Hill, Houghton Mifflin, HarperCollins, the Farlex clip-art collection copyright Princeton University, and Wikipedia and provides citations for each search. 

This app is commonly know as the world’s most comprehensive dictionary. The app can serve as dictionary, thesaurus, translation tool and encyclopaedia. 

Brought to you by Farlex, the minds behind the ever-popular The Free Dictionary, Dictionary. is a multifaceted, all-in-one dictionary app perfect for students, translators, writers, and copywriters. Dictionary. provides access to dozens of dictionaries including a Medical Dictionary, an English Idioms and Slang Dictionary, an English Offline Thesaurus, and many more, so if you can’t find a word or expression, it probably doesn’t exist. 


If you're looking for a rhyme, near rhyme, synonym, antonym, homophone, similar sounding words, words with the same consonant pattern, or other related words such as generalizations, specializations, and words that appear in the same context, then RhymeZone is the powerful rhyming dictionary and thesaurus to help you find the right word.

RhymeZone has a database of over 100,000 words which can be accessed even if your mobile device is not connected to the Internet. Although you need not be connected to find rhymes, being connected via WiFi or 3G means that the RhymeZone app will be connected to RhymeZone.com and provide you with definitions and other functions aside from the rhyme.


Kids Picture Dictionary is a great dictionary app for preschoolers and toddlers. The picture dictionary features over 650 high quality images with text and voiceovers. Parents or kids can repeat the sentences or make their own sentences by using the fun self-record tool. Complexity of words is perfect for ages 3 to 6 so two or more young siblings can play together and even teach each other!

Word Central is an educational site that offers a full children's dictionary, word games, and daily buzzwords. The exercises included on this site give kids an opportunity to better their vocabulary and to learn about the origin of language. A "Build Your Own Dictionary" section allows users to create their own words, parts of speech, and definitions. 


The Longman Collocations Dictionary and Thesaurus is a unique blend of two dictionaries, helping learners of English to choose the correct word and collocation every time. The 6th edition of the Longman Dictionary of Contemporary English is the complete online vocabulary and grammar resource for students and teachers.


Urban Dictionary

( iPhone, iPad )

The Urban Dictionary app is a crowdsourced slang dictionary that records new words and their meanings. Part of Urban Dictionary’s app is its informal approach, which allows both definitions and descriptions of slang and non slang words. 

The app offers a simple interface. Search on a word or phrase that you’ve heard, but don’t understand. Or, for the most fun, press the Random or Daily, as in “word of the day,” buttons. Shaking your phone also activates the Random feature.