Best Synonym Antonym App

177+ iOS apps & games curated and reviewed

4.4 avg rating
16 free apps & games
Updated June 2026

Looking for free synonym antonym app apps and games? 16 of our 177+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for Synonym Antonym App

Thesaurus App#1

Thesaurus App by Piet Jonas

Editor's Choice
🔍 Reference
1.0(4 ratings)
$0.99
Thesaurus App screenshot 1
Thesaurus App screenshot 2
Thesaurus App screenshot 3
Thesaurus App screenshot 4
Thesaurus App screenshot 5

Quickly find synonyms, antonyms, related terms, and more with this app. Expand your vocabulary and streamline your search process - available on Apple Watch and supports iPad multitasking. Start exploring now!

Word Hippo#2

Word Hippo by KAT IP PTY LTD

Thesaurus and Word Reference
Strong Contender
🔍 Reference
4.9😊(12K ratings)
FreeAdsIn-App Purchases
Word Hippo screenshot 1
Word Hippo screenshot 2
Word Hippo screenshot 3
Word Hippo screenshot 4
Word Hippo screenshot 5
Word Hippo screenshot 6

Discover a comprehensive thesaurus and word reference tool with features like advanced synonyms, antonyms, example sentences, rhyming words, word types, matching words, definitions, and translations.

What We Love

  • 👍 Multi-functional app with thesaurus, dictionary, and more
  • 🚀 Comprehensive and extensive word lists
  • 📚 Helpful for writing, vocabulary building, and creative expression
  • 💰 Affordable premium upgrade with no ongoing subscription

Room to Improve

  • 🐛 Occasional app freezes or crashes
  • 🔍 Inconvenient to re-enter search term when switching between features
  • 🔍 Lack of offline functionality
Merriam-Webster Dictionary#3

Merriam-Webster Dictionary by Merriam-Webster, Inc.

Worth Considering
🔍 Reference
4.8😊(320K ratings)
FreeAdsIn-App Purchases
#41in Reference
Merriam-Webster Dictionary screenshot 1
Merriam-Webster Dictionary screenshot 2
Merriam-Webster Dictionary screenshot 3
Merriam-Webster Dictionary screenshot 4

Access a premier iOS app for English language reference, education, and vocabulary building, with new word games and quizzes for learning. Features universal access, offline capabilities, voice search, daily word learning, thesaurus, example sentences, and pronunciations by real speakers. Enjoy features like favorite word syncing and Apple Watch integration. Subscribe to remove ads and access extra resources. Manage your subscription easily. Terms of Use: [Link to Terms of Use].

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive definitions
  • 👍 Helpful thesaurus
  • 🚀 Offline access

Room to Improve

  • 🐛 Ads can be intrusive
  • 🐛 Difficulty closing ads
  • 🐛 Repetitive game questions

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4
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5
Dictionary and Thesaurus Pro
Dictionary and Thesaurus Pro
Dictionary and Thesaurus Pro
by TheFreeDictionary.com
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Access the premium ad-free Dictionary and Thesaurus Pro app by TheFreeDictionary.com for comprehensive offline dictionary and thesaurus content in multiple languages, including offline translations.

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6
Synonyms Quiz
Synonyms Quiz
Synonyms Quiz
Test, Thesaurus & Dictionary
Free

Test your vocabulary with our app that challenges you to match words with their synonyms! Expand your language skills and knowledge in a fun and engaging way. Ready to start the quiz?

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7
Persian Dictionary - ديكشنري
Persian Dictionary - ديكشنري
Persian Dictionary - ديكشنري
ديكشنري و مترجم فارسي انگلیسي
Free

A comprehensive offline Persian-English Dictionary app featuring over 400,000 words, audio pronunciation, vocabulary games, idioms, and daily English listening lessons. Ideal for studying, working, or traveling, offering advanced search functions and the ability to create personalized vocabulary lists. Discover a wealth of linguistic resources at your fingertips!

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8
Power Thesaurus
Power Thesaurus
Power Thesaurus
Comprehensive. Fast. Reliable.
Free

Discover a powerful, community-driven online platform offering a vast collection of synonyms, antonyms, and word associations for writers and students. Enhance your writing experience with user-friendly tools, personalized search results, and ad-free option. Join the community, contribute new terms, and access account features for an improved writing journey.

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9
LexicEN Lite English
LexicEN Lite English
LexicEN Lite English
Offline Dictionary & Thesaurus
Free

LexicEN Lite English is an offline dictionary app designed to offer fast and easy search functionality for definitions, synonyms, and translations in multiple languages. Download now to enhance your vocabulary on the go!

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10
200+ Apps in 1 - AppBundle 2
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All-in-One App Utility Bundle
Free

Access 200 utility, entertainment, camera, and game apps all in one place with this all-in-one utility bundle. Say goodbye to downloading multiple apps on different devices and get everything you need with AppBundle 2.

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11
Etymonline English Dictionary
Etymonline English Dictionary
Etymonline English Dictionary
Dictionary to Build Vocabulary
Free

A comprehensive English dictionary app offering word origins and vocabulary building tools. Features include instant search with spelling suggestions, offline dictionary access, related words, and premium ad-free and offline functionality. Explore word roots and enhance your vocabulary effortlessly.

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12
Synonyms & Antonyms Dictionary
Synonyms & Antonyms Dictionary
Synonyms & Antonyms Dictionary
Include 50000+ English words
Free

This comprehensive dictionary app provides a vast collection of over 50,000 English words, including synonyms and antonyms with definitions and usage examples, making it an essential resource for students, travelers, and language learners. With its user-friendly interface, powerful search system, and features like favorites and history, it helps users expand their vocabulary and improve their language skills.

🔧 Utilities
(4)
13
Terminology
Terminology
Terminology
Dictionary•Thesaurus•Research
Free

Explore a comprehensive terminology dictionary with extensive definitions, synonyms, and related terms. Enhance your understanding of various concepts and expand your vocabulary effortlessly. Start discovering today!

🔍 Reference
(1K)
14
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary, Thesaurus, Vocab
Free

Access the ultimate English language learning app packed with quizzes, games, and over 2 million definitions and synonyms. Enhance your vocabulary with word puzzles and daily challenges, enjoy dark mode, offline access, voice search, and more. Improve your English skills effortlessly!

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15
Dictionary.
Dictionary.
Dictionary.
by TheFreeDictionary.com
Free

Discover a comprehensive Dictionary and Thesaurus app with a Word of the Day feature, offline access, and resources from top sources. Access millions of definitions, synonyms, translations, and more for a versatile language tool.

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16
Synonym Antonym Audiobook
Synonym Antonym Audiobook
Synonym Antonym Audiobook
text synced with audio
$0.99

This application combines a text reference with professional narration, allowing users to read and listen to content in sync, with features such as adjustable font and reading modes, highlighting, and background audio playback. It's a valuable tool for people with reading disorders, language learners, and anyone who wants to enjoy their favorite texts in a flexible and accessible way.

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(0)
17
Synonyms & Antonyms Finder
Synonyms & Antonyms Finder
Synonyms & Antonyms Finder
Master English Vocabulary
Free

Explore a versatile app that expands your vocabulary with synonyms, offering a vast range of alternative words to enrich your writing and communication. Elevate your language skills and enhance your expressions effortlessly.

📚 Education
(6)
18
WordPal - Vocabulary Builder
WordPal - Vocabulary Builder
WordPal - Vocabulary Builder
Learn new words: expand vocab
Free

Improve your English vocabulary rapidly with an intuitive app that uses spaced repetition and engaging exercises to help you learn new words efficiently. Access definitions, examples, and track your progress easily for free, with the option to upgrade for more features like games and additional word sets.

📚 Education
(8.8K)
19
Synonyms and Antonyms
Synonyms and Antonyms
Synonyms and Antonyms
by A-Z Computers
Free

This educational game helps build vocabulary and enhance reading comprehension by matching synonyms and antonyms in a fun and competitive way. Play to test your skills and climb the online leader board.

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(9)
20
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Premium Ad-free Dictionary
$9.99

Access a premium ad-free dictionary app for iPhone, iPad, and Apple Watch with offline capabilities, new word games, and features like integrated thesaurus, vocabulary-building quizzes, voice search, and word of the day. Perfect for English language reference and vocabulary building. Find out more by checking the Application License Agreement and App Privacy Policy.

🔍 Reference
(22K)