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Best Dictionary And Thesaurus Pro Apps

231+ iOS apps curated and reviewed

4.4 avg rating
14 free apps
Updated August 2026

From beginner-friendly picks to power-user tools, our dictionary and thesaurus pro list covers 231+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.

Compare top Dictionary And Thesaurus Pro Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Dictionary and Thesaurus ProDictionary and Thesaurus Pro$9.994.9★ (2.6K)NoNoAug 2026
2Dictionary.com: English WordsDictionary.com: English WordsFree4.8★ (328K)YesNoAug 2026
3Oxford Dictionary & ThesaurusOxford Dictionary & ThesaurusFree4.6★ (29K)NoYesAug 2026
4Dictionary.Dictionary.Free4.8★ (15K)YesYesAug 2026
5Power ThesaurusPower ThesaurusFree4.8★ (3K)YesYesAug 2026
6FreeSaurus - The Free Thesaurus!FreeSaurus - The Free Thesaurus!Free3.4★ (120)NoNoJul 2026
7Merriam-Webster DictionaryMerriam-Webster DictionaryFree4.8★ (324K)YesYesAug 2026
8Interactive ThesaurusInteractive Thesaurus$2.994.8★ (758)NoNoAug 2026

Top Picks for Dictionary And Thesaurus Pro

Dictionary and Thesaurus Pro#1

Dictionary and Thesaurus Pro by Farlex, Inc.

by TheFreeDictionary.com
Editor's Choice
🔍 Reference
4.9😊(2.6K ratings)
$9.99
#67in Reference
Dictionary and Thesaurus Pro screenshot 1
Dictionary and Thesaurus Pro screenshot 2
Dictionary and Thesaurus Pro screenshot 3
Dictionary and Thesaurus Pro screenshot 4
Dictionary and Thesaurus Pro screenshot 5

Access a comprehensive offline dictionary and thesaurus with extensive content in multiple languages. Explore definitions, synonyms, and specialized dictionaries for various fields. Enjoy an ad-free experience with features like word games and instant lookups.

What We Love

  • 👍 Easy to use
  • 🚀 Comprehensive and detailed definitions
  • 💡 Helpful translation and pronunciation features
  • 👍 Useful word games and trivia

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔍 Limited thesaurus functionality
  • 🔍 Lack of customization options
Dictionary.com: English Words#2

Dictionary.com: English Words by Curiosity Media

Dictionary, Thesaurus, Vocab
Strong Contender
🔍 Reference
4.8😐(328K ratings)
FreeAdsIn-App Purchases
Dictionary.com: English Words screenshot 1
Dictionary.com: English Words screenshot 2
Dictionary.com: English Words screenshot 3
Dictionary.com: English Words screenshot 4
Dictionary.com: English Words screenshot 5

Access over 2 million trusted definitions and synonyms for English words. Enhance your vocabulary with daily new words, example sentences, and audio pronunciations. This app provides grammar tips and editorial content to deepen your understanding of the English language.

What We Love

  • 🚀 Robust dictionary and thesaurus
  • 🤓 Helpful resources like blogs and articles
  • 💡 Useful word games and puzzles
  • 👍 Easy to use and navigate

Room to Improve

  • 🐛 Inconsistent search results and missing definitions
  • 💸 Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues
Oxford Dictionary & Thesaurus#3

Oxford Dictionary & Thesaurus by MobiSystems, Inc.

Etymology & Offline Vocabulary
Worth Considering
🔍 Reference
4.6😐(29K ratings)
FreeIn-App Purchases
#89in Reference
Oxford Dictionary & Thesaurus screenshot 1
Oxford Dictionary & Thesaurus screenshot 2
Oxford Dictionary & Thesaurus screenshot 3
Oxford Dictionary & Thesaurus screenshot 4
Oxford Dictionary & Thesaurus screenshot 5
Oxford Dictionary & Thesaurus screenshot 6

Access a vast collection of dictionaries and thesauruses with definitions, pronunciations, and etymology. Features include offline access, advanced search options, and personalized word lists. Ideal for students, professionals, and word enthusiasts.

What We Love

  • 👍 Reliable and simple to use
  • 👍 Comprehensive and best for all English, especially rare and aged language
  • 👍 Very useful for learning new words
  • 👍 Excellent reference app

Room to Improve

  • 🐛 Glitchy, way too many ads
  • 🔒 Annoying popup ads makes it unusable
  • 🔒 Ads stuck in, despite payment

More Dictionary And Thesaurus Pro apps to explore

4
Dictionary.
Dictionary.
Dictionary.
by TheFreeDictionary.com
Free

Access a comprehensive dictionary, thesaurus, and translation tool with millions of definitions and synonyms. Explore specialty dictionaries, learn new words daily, and play word games. This app offers offline access and integrates seamlessly with other applications.

Offline dictionary and thesaurusMillions of definitions and synonymsWord of the Day and Idiom of the Day
🔍 Reference
(15K)
free with in-app purchases
5
Power Thesaurus
Power Thesaurus
Power Thesaurus
Comprehensive. Fast. Reliable.
Free

Find accurate synonyms, antonyms, definitions, and related words with this comprehensive and fast thesaurus. Designed for writers, students, and professionals, it offers intuitive navigation and smart filters to help you express ideas clearly and confidently.

Ad-free PRO MembershipIntuitive navigationSmart filters
🔍 Reference
(3K)
freemium
6
FreeSaurus - The Free Thesaurus!
FreeSaurus - The Free Thesaurus!
FreeSaurus - The Free Thesaurus!
by Weeswares Pte Ltd
Free

This is a straightforward thesaurus app that provides synonyms and antonyms for words. It focuses on simplicity and ease of use, offering related words alongside definitions. An internet connection is required for it to function.

Synonyms and antonymsRelated wordsSimple interface
🔍 Reference
(120)
free
7
Merriam-Webster Dictionary
Merriam-Webster Dictionary
Merriam-Webster Dictionary
by Merriam-Webster, Inc.
Free

Access America's most respected dictionary, updated with new words and meanings. This app offers offline access, voice search, daily vocabulary challenges, and a thesaurus. It's designed for English language reference, education, and vocabulary enhancement.

Offline dictionary accessVoice search for wordsDaily Word of the Day
🔍 Reference
(324K)
free with in-app purchases
8
Interactive Thesaurus
Interactive Thesaurus
Interactive Thesaurus
Visual Dictionary & Thesaurus
$2.99

Explore word meanings and relationships with this smart English thesaurus. It helps you find suitable words, expand your vocabulary, and improve grammar through an intuitive interface with semantic relations and color-coded parts of speech. Offline access and sharing options are included.

200,000+ English words and definitionsVisual semantic relations between wordsColor coding for parts of speech
🔍 Reference
(758)
paid
9
Thesaurus App - Free
Thesaurus App - Free
Thesaurus App - Free
by Piet Jonas
Free

Instantly find synonyms for any word. Access antonyms, related terms, and user suggestions for a comprehensive vocabulary experience. Easily perform new searches by tapping on results and review your search history.

Synonym retrievalAntonym lookupRelated terms
🔍 Reference
(7)
free with in-app purchases
10
Thesaurus dictionary- Wordloop
Thesaurus dictionary- Wordloop
Thesaurus dictionary- Wordloop
Synonyms power up vocabulary
Free

Enhance your writing by accessing a thesaurus directly from your keyboard. Select any word in any app to instantly see synonyms and related terms, helping you expand your vocabulary and refine your text. This ad-free tool offers a simple and effective way to improve your communication.

Keyboard thesaurus integrationInstant word suggestionsSynonym lookup in any app
🔍 Reference
(282)
free with in-app purchases
11
Roget's II: New Thesaurus
Roget's II: New Thesaurus
Roget's II: New Thesaurus
Synonyms & Antonyms by UniDict
$4.99

Access a comprehensive English thesaurus with millions of synonyms and related terms. Enhance your vocabulary and express yourself more effectively with this powerful reference tool, featuring advanced search and offline capabilities.

Full text of Roget's II: The New ThesaurusMillions of synonyms and related termsReal-time progressive look-up
🔍 Reference
(357)
paid
12
Advanced English Dictionary.
Advanced English Dictionary.
Advanced English Dictionary.
English Dictionary & Thesaurus
$2.99

This comprehensive English dictionary and thesaurus offers offline access to millions of words, definitions, pronunciations, and etymologies. Explore word connections, sample sentences, and discover new vocabulary with advanced search and unique features.

Extensive word database (4.9 million words)High-quality audio pronunciations (US, UK, AU)Advanced search technology
🔍 Reference
(241)
paid
13
Advanced English Dictionary HD
Advanced English Dictionary HD
Advanced English Dictionary HD
English Dictionary & Thesaurus
$3.99

Access a vast English dictionary and thesaurus with millions of words, definitions, and pronunciations. Explore word origins, sample sentences, and discover connections with a unique conceptual thesaurus. Enjoy offline access and an ad-free experience.

Extensive word database (4.9 million words)High-quality audio pronunciations (US, UK, AU)Advanced search technology
🔍 Reference
(59)
paid
14
Thesaurus: Synonym Keyboard
Thesaurus: Synonym Keyboard
Thesaurus: Synonym Keyboard
Synonyms as you type
Free
📊 Productivity
(0)
15
Dictionary
Dictionary
Dictionary
in Widget
Free

Instantly look up words from your iOS Home Screen without opening the app. Get definitions in seconds to aid studying, reading, or satisfying curiosity, keeping you focused and learning.

Home Screen widget for instant lookupsNo app launch requiredQuick definitions
🔍 Reference
(4)
ad-supported
16
Pocket Thesaurus
Pocket Thesaurus
Pocket Thesaurus
The Ultimate Offline Thesaurus
Free

Expand your vocabulary and master the English language with this offline thesaurus. Quickly find synonyms and antonyms, explore word definitions, and enhance your writing and communication skills. Features include daily word challenges and advanced search options.

Extensive offline access to 90,000+ wordsFast and efficient synonym/antonym searchWord of the Day/Week from GRE list
🔍 Reference
(380)
free with in-app purchases
17
Dictiona: English Dictionary
Dictiona: English Dictionary
Dictiona: English Dictionary
Meanings, Synonyms & Words
Free
📚 Education
(0)
18
Spanish Dictionary & Thesaurus
Spanish Dictionary & Thesaurus
Spanish Dictionary & Thesaurus
with English Translations
Free

Access a comprehensive Spanish dictionary and thesaurus with English translations. Look up definitions, verb conjugations, and synonyms. Features include offline access, audio pronunciations, and voice search for convenient word discovery.

Offline Spanish dictionarySpanish to English translationsAudio pronunciations
🔍 Reference
(186)
free with in-app purchases
19
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
Advanced Dictionary&Thesaurus
English dictionary with Audio
Free

This comprehensive English dictionary and thesaurus offers precise definitions, synonyms, antonyms, and related words. It features intelligent search tools, offline audio, and customizable themes to enhance your language learning experience.

140,000+ definitionsSynonyms, antonyms, and related wordsOffline audio pronunciation
🔍 Reference
(4.6K)
free with in-app purchases
20
American Heritage® Dictionary
American Heritage® Dictionary
American Heritage® Dictionary
UniDict® - 4th Edition (AHD4)
$12.99

Access a comprehensive digital dictionary with nearly 300,000 terms and thousands of sound files. Features include advanced search, etymology, and AI-powered tools for deeper understanding and language learning.

Full dictionary text33,000+ example sentences64,000+ recorded sound files
🔍 Reference
(196)
free with in-app purchases

FAQ about Dictionary And Thesaurus Pro

What are the best dictionary and thesaurus pro apps for iPhone?
Dictionary and Thesaurus Pro tops our dictionary and thesaurus pro apps ranking as of August 2026, with a 4.9-star average from 2.6K App Store ratings, and it's priced at $9.99.
Yes — 14 of the top dictionary and thesaurus pro apps we rank are free to download, including Dictionary.com: English Words and Oxford Dictionary & Thesaurus.
Dictionary and Thesaurus Pro has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 231+ dictionary and thesaurus pro apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app provides a comprehensive offline dictionary and thesaurus with extensive content in English and 13 other languages. It offers definitions, synonyms, example sentences, audio pronunciations, and specialized dictionaries for fields like medical, legal, and financial.
Key features include an ad-free experience, offline access to dictionaries and thesauruses, offline translations into over 40 languages, specialty dictionaries, word games, instant lookups from other apps, and voice search.