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  • Dictionary and Thesaurus Pro screenshot 1
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About Dictionary and Thesaurus Pro

Get the world's most comprehensive ad-free dictionary and thesaurus with extensive offline dictionary content and synonyms. Dictionary Pro is the premium version of The Free Dictionary app, featuring: * No ads. * A comprehensive English offline dictionary and offline thesaurus. * Offline dictionaries in 13 other languages. * Offline translations of English into more than 40 languages. * Dozens of other offline translation options. Rated #1 app in the App Store in the paid reference category in 109 countries 2011–2019 (Source: http://www.appannie.com/apps/ios/app/492085918/app-ranking/#device=iphone&type=best-ranks) Plus TheFreeDictionary's classic app content: * Find every word you search for. Get results from trusted sources: Webster's Dictionary Roget's Thesaurus The American Heritage Dictionary + More than 100 dictionaries and encyclopedias from these top publishers: McGraw-Hill Houghton Mifflin HarperCollins Random House Elsevier + More! * Learn the word. Clear definitions, example sentences, etymologies, illustrations, and more. * Learn how to say it. Play audio pronunciations and hear it pronounced. * Learn something new. Word of the Day and other fresh daily content. * Find the perfect synonym fast. East-to-use Thesaurus with synonyms, antonyms, and related words. * Explore topics in-depth. Multiple specialty dictionaries and encyclopedias: Medical Legal Science Financial Idioms Acronyms and Abbreviations + More! * Watch idioms in action. View idioms videos inside the app and see idioms and slang explained. * Play word games. Spelling Bee, Hangman, and more. * Access dictionaries in 13 other languages, including: Spanish French German Italian Portuguese Russian Chinese + More! What makes Dictionary Pro the most user-friendly dictionary app? * Instantly look up words in apps or webpages! Just highlight the word you want to look up, tap "Share," then tap "More" in the bottom menu and turn on the "Define" option. You will then see a "Define" icon in the menu. Tap it to see the definition of the highlighted word! * Voice search. Just say the word to look it up. * Advanced Search options. * Look up the definition of any word on the page. Just highlight and tap "Definition." * Save bookmarks with one tap and sync them to all your devices. * Customize your homepage: Move, add, or remove articles, games, even local weather. * Jump to Definition, Thesaurus, or Translations with one button. * Navigate the app in more than a dozen languages with the multilingual interface. * Adjust font size. * Share your favorite definitions and articles via social networks, email, or text. EXCLUSIVE * Earn meals for hungry children through The Free Dictionary's partnership with the World Food Program—just by using the app! Not convinced? Read our reviews to see why our users say this is the best dictionary app they've ever used. How do we do it? Farlex is a leader in dictionary apps. We work with the best publishers to bring together trusted content in the most comprehensive, authoritative dictionary apps on the market. Find our other apps by searching "Dictionary by Farlex" in the App Store. * For app developers: The Free Dictionary app can be accessed by other apps with API calls (Contact Farlex for instructions).

Ratings & reviews

4.9

2.5K ratings

5 ★ 92% 4 ★ 5% 3 ★ 1% 2 ★ 1% 1 ★ 1%

What’s new

Version 14.1.1 · Updated April 2, 2026

Bugfixes (including Grammar Quiz)

App privacy

The developer, Farlex, Inc., reported these privacy practices to Apple.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers: Device ID

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Location: Coarse Location
  • Usage Data: Product Interaction
  • Diagnostics: Performance Data, Other Diagnostic Data, Crash Data
  • Identifiers: Device ID

Used for: Analytics, App Functionality

Alternatives to Dictionary and Thesaurus Pro

Looking for apps like Dictionary and Thesaurus Pro? Here are 6 similar apps on the App Store. The highest rated is Merriam-Webster Dictionary+ (4.8/5), and 3 of the 6 are free to download.

Dictionary and Thesaurus Pro vs. alternatives
App Rating Price Last updated Compare
Dictionary and Thesaurus Pro 4.9 / 5 (2,563 ratings) 9.99 USD April 2, 2026
Merriam-Webster Dictionary+ 4.8 / 5 (22,244) 9.99 USD Sep 22, 2026 Compare
Roget's II: New Thesaurus 4.7 / 5 (373) 4.99 USD Oct 12, 2026 Compare
American Heritage Dictionary 5 4.5 / 5 (441) Free Oct 11, 2026 Compare
Advanced English Dictionary+ 4.7 / 5 (916) Free Sep 2, 2026 Compare
Advanced English Dictionary. 4.7 / 5 (241) 2.99 USD Sep 10, 2024 Compare
Deep Dictionary 4.7 / 5 (51) Free Oct 15, 2026 Compare

Compare Dictionary and Thesaurus Pro with the top alternatives: ratings, updates, ASO score and keyword gaps →