What's New

Merriam-Webster Dictionary HD is no longer supported. Please download the Universal Merriam-Webster Dictionary & Thesaurus.

App Description

The HD version of the Merriam-Webster Collegiate App is no longer being supported. Please download the Universal version available for all your iOS devices.

Get America’s most useful and respected dictionary, optimized for your iPhone, iPad, and Apple Watch. This is the best iOS app for English language reference, education, and vocabulary building.

And now we’ve added new word games! It’s never been more fun to learn new words and test your vocabulary for everyone from English learners to total word nerds. Hundreds of words to test your skills.

Offline access: You’ll have complete access to definitions and synonyms whether or not you’re connected. You will need a connection to view illustrations, hear audio pronunciations, and use voice search.

Selected as a "Best New App" by iTunes.


* No ads
* Full Thesaurus: more than 200,000 word choices, examples, and explanations
* New Vocabulary-Building Quizzes: fun, fast quizzes to learn new words or test your vocabulary
* Voice Search: look up a word without having to spell it
* Word of the Day: learn a new word every day.
* Example Sentences: understand how a word is used in context
* Quick Definitions: perfect for on-the-go lookups
* Audio Pronunciations: voiced by real English speakers, not text-to-speech robots
* Favorite Words and Search History: Keep track of the words that are most important to you
* Favorite Word syncing through iCloud: Share your favorites between devices
* Premium Content: over 1000 graphical illustrations, and over 20,000 additional entries covering people, places, and foreign terms
* For iPad: Scrolling Index - lets you browse the entire dictionary

Please click the link to the Application License Agreement, below, which includes our App Privacy Policy.

iPad Screenshots

(click to enlarge)

Merriam-Webster Dictionary & Thesaurus HD screenshot 1 Merriam-Webster Dictionary & Thesaurus HD screenshot 2 Merriam-Webster Dictionary & Thesaurus HD screenshot 3 Merriam-Webster Dictionary & Thesaurus HD screenshot 4 Merriam-Webster Dictionary & Thesaurus HD screenshot 5

App Changes

  • June 06, 2014 Initial release
  • September 16, 2014 New version 3.1
  • July 17, 2015 New version 3.3.1
  • September 19, 2015 New version 3.3.2
  • March 24, 2016 New version 3.4.2
  • June 21, 2016 New version 3.4.3
  • September 23, 2016 New version 3.5.1
  • November 02, 2016 New version 3.6
  • November 12, 2016 New version 3.6.1
  • December 22, 2016 New version 3.6.2

Other Apps From Merriam-Webster, Inc.

Merriam-Webster Dictionary Merriam-Webster Dictionary & Thesaurus Quizzitive – A Merriam-Webster Word Game SCRABBLE Dictionary Merriam-Webster Dictionary HD Learner's Dictionary - English Learner's Dictionary - English HD