Merriam-Webster Dictionary Pro

Merriam-Webster Dictionary Pro

By Merriam-Webster, Inc.

  • Category: Reference
  • Release Date: 2011-12-09
  • Current Version: 4.6
  • Adult Rating: 4+
  • File Size: 213.17 MB
  • Developer: Merriam-Webster, Inc.
  • Compatibility: Requires iOS 9.0 or later.
Score: 4.5
From 5,711 Ratings


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. Features: * Universal app * 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 * Apple Watch Extension: See Word of the Day, look up words with voice search, and keep track of your favorites from your watch * Premium Content: over 1000 graphical illustrations, and over 20,000 additional entries covering people, places, and foreign terms Please click the link to the Application License Agreement, below, which includes our App Privacy Policy.



  • Very good!

    By SkyforestLin
  • Love this app

    By NJnaturelover
    I am a frequent user of the M-W app. What can I say? It is easy to use with all the features of a good dictionary: synonyms, antonyms, origins, and examples of usage. The recents feature is useful as well. The word of the day and the games are fun and educational.
  • Missing words (use the free website instead)

    By dnram
    Update (Oct. 2019): I continue to be flabbergasted by the dearth of vocabulary in this dictionary app. To add to the lack of words presented by the vocab challenges, I’ve consistently found words, which are not on the app, on Merriam-Webster’s freely accessible website. On the positive side, I have not experienced crashes. That may be because I rarely use the app now. I chose this paid dictionary app because of its pleasant and facilitative interface. However, I am struck by a significant absence of words: namely, the words featured in the app’s daily challenge quiz. For example, I just took the challenge quiz today (2/17/2019), and I confirmed as missing the words “gamphrel,” “sniptious,” “formosity,” and “bezonian.” Obscure words, to be sure, with the exception of “formosity” perhaps. Nevertheless, they’re posed by the app itself! There very well may be more words missing that were included in the quiz, but I stopped going through them once the app crashed yet again. When attempting to swipe between defined words, the underline that indicates which word is selected from the search history moves a little and then the whole application freezes. It is a minor annoyance, and one I expect will be patched fairly easily. Missing words in its own vocabulary quiz, though...that’s bad.
  • Thorough, Helpful, & Easy

    By Sumydid
    This app is one of my most-used tools as I study, write emails, or read. I would highly recommend it to anyone who isn’t ride to a cumbersome dictionary or thesaurus.
  • the best

    By Sammytrombone
    the best dictionary and a great, speedy app. dark mode please!
  • Won’t open!

    By taboo2damfly
    Ever since my update to iOS 13, this app won’t open up for me. I tap it, the main screen comes up. It either crashes or stays on the main screen. If I’m not mistaken I paid for this app. (Not 100% sure if this was a paid app or not because I got it long ago and there was another that wasn’t a paid app but I upgraded to ad free so I’m sure it was paid for.) I would like for the app developers to fix this app. It was a great app prior to this mess. I use it, well USED it daily. Now I can’t.
  • Simple definitions

    By BlueberrySunflower
    Smart and easy to understand. Great illustrations!
  • Quick, clear, easy to use

    By Enkaybe
    Simple in use with a speech option for unfamiliar words. Great.
  • My go to app for definitions

    By Travel'n man w/word games
    This is a daily use app for me
  • Great app for writing sermons

    By Potters House Church
    I use it to help me in writing sermons. Thank you Webster’s. You help make my life easier and enjoyable