Download the number one free dictionary app with English language learning tools and free word games built for every level of learner.

With more than 2 million trusted definitions and synonyms plus word puzzles, language quizzes, and spelling quizzes, this English dictionary and thesaurus app for iPhone is optimized with your mobile device in mind to help you learn English or improve your English vocabulary.

Flip to dark mode to give your eyes a break, or stick to the traditional set-up. It even works offline! Install the offline dictionary for access to definitions and synonyms whenever and wherever you need them — no bulky books necessary.

In addition to the trusted reference content from Dictionary.com and Thesaurus.com, this education app includes:

Word Puzzle ► Love crossword puzzles and anagrams? You’ll flip for our word puzzle! Unscramble the letters, and cash in your coins for an extra boost. Want more word game fun? Improve your vocabulary with fun spelling quizzes and vocabulary challenges.

Word of the Day ► Learn a new word each day and expand your vocabulary education.

Synonym of the Day ► Can you pick the correct synonym for a word? Keep your vocabulary sharp with our daily synonym challenge.

Audio pronunciations ► Never mispronounce another word.

Synonyms ► Get thesaurus content alongside your dictionary definitions.

Voice search ► Find the definitions you’re looking for anywhere, anytime. The app even offers up English spelling help. Not sure how a word is spelled? Say it out loud, and this app will find it for you.

Grammar help ► Get grammar tips, word usage, and more to improve your writing.

Editorial articles ► Explore editorial content for features on words, the origins of our language, and the nuances that make English so complicated and unique.

Favorite words and search history ► Customize your recently searched word list, and never forget the newest words you’ve learned.

Learner’s dictionary ► Includes extra information about word usage for English learners.

Dictionary shuffle ► Think you know ALL the definitions? Prove it with Dictionary Shuffle, which chooses a word at random and brings you to the definition.

A-Z Dictionary ► What’s more exciting than ... wait for it … browsing the Dictionary?! We’ve now made it even easier, with the A–Z Dictionary.


Optimized for Apple Watch!


Get even more from your app with our upgrades:

- Example Sentences

- Encyclopedia

- Idioms and Phrases

- Science and Rhyming Dictionaries

- Offline Dictionary + Remove ads

Or get the best value with our power pack, which includes them all!