Best Thesaurus App

201+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated June 2026

With an average user rating of 4.2★, the thesaurus app category is one of the App Store's strongest. Browse all 201+ apps we track, sorted so the most loved ones surface first.

Top Picks for Thesaurus App

Merriam-Webster Dictionary#1

Merriam-Webster Dictionary by Merriam-Webster, Inc.

Editor's Choice
🔍 Reference
4.8😊(320K ratings)
FreeAdsIn-App Purchases
#35in Reference
Merriam-Webster Dictionary screenshot 1
Merriam-Webster Dictionary screenshot 2
Merriam-Webster Dictionary screenshot 3
Merriam-Webster Dictionary screenshot 4

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.

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
Power Thesaurus#2

Power Thesaurus by Radyushin Pty Ltd

Comprehensive. Fast. Reliable.
Strong Contender
🔍 Reference
4.8😊(2.9K ratings)
FreeAdsIn-App Purchases
Power Thesaurus screenshot 1
Power Thesaurus screenshot 2
Power Thesaurus screenshot 3

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.

What We Love

  • ⭐ Invaluable tool for everyone
  • 🚀 Must have
  • ⭐ Superior
  • ⭐ Synonyms

Room to Improve

  • 🔌 Could be better
  • 🐛 Crashes
  • 🐛 Crashes the second you tried to open it
Dictionary.com: English Words#3

Dictionary.com: English Words by Curiosity Media, Inc.

Dictionary, Thesaurus, Vocab
Worth Considering
🔍 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
Dictionary.com: English Words screenshot 6

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

More Thesaurus App apps to explore

4
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Thesaurus & Offline Vocabulary
Free

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.

15 Oxford DictionariesThesaurus integrationAudio pronunciations
🔍 Reference
(28K)
free with in-app purchases
5
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
6
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
(258)
free with in-app purchases
7
Word Hippo
Word Hippo
Word Hippo
Thesaurus and Word Reference
Free

This app offers a comprehensive suite of word tools, including an advanced thesaurus for synonyms and antonyms, example sentences, rhyming words, and word type identification. It also features word finders for games, definitions, and translations into numerous languages.

Advanced thesaurus with synonyms and antonymsExample sentences for word usageRhyming word finder
🔍 Reference
(12K)
free with in-app purchases
8
Dictionary - Word Search Lex
Dictionary - Word Search Lex
Dictionary - Word Search Lex
Dictionary for normal Language
Free

Access a professional multilingual dictionary for English, Japanese, and Korean. Get detailed definitions, pronunciations, and example sentences. Save your search history and favorites for offline language learning.

Multilingual definitionsPronunciations and examplesAuto-save history
🔧 Utilities
(1)
ad-supported
9
Thesaurus App
Thesaurus App
Thesaurus App
by Piet Jonas
$0.99

Instantly find synonyms for any word. Explore antonyms, related terms, and user-suggested words. Tap results for new searches and access your search history.

Synonym retrievalAntonym searchRelated terms
🔍 Reference
(4)
free
10
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
11
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
(4.3K)
free with in-app purchases
12
English Dictionary *
English Dictionary *
English Dictionary *
Thesaurus and Vocabulary words
Free

Enhance your English vocabulary with a comprehensive offline dictionary and thesaurus. Access over 500,000 words, their meanings, synonyms, antonyms, and pronunciations. Perfect for students and professionals to improve language skills anytime, anywhere.

Offline word searchSynonyms and antonymsWord definitions
🔍 Reference
(1.1K)
subscription
13
Dictionary & Translator
Dictionary & Translator
Dictionary & Translator
Learn and Translate Languages
Free

Access trusted definitions, thesaurus, and pronunciations for numerous languages. Translate text and images offline or online, and enhance your learning with vocabulary challenges and grammar checking.

Offline dictionary and thesaurusCross-cultural text and image translationVocabulary challenges and grammar checking
📚 Education
(13K)
free with in-app purchases
14
Vocabulary.com
Vocabulary.com
Vocabulary.com
by Curiosity Media, Inc.
Free

Master new words with an engaging, game-like system powered by a smart dictionary. Personalized learning adapts to your level, offering quizzes and reinforcement to improve your communication skills for school and business.

Adaptive learning algorithmsPersonalized word learningGame-like learning experience
📚 Education
(4.9K)
free
15
Thesaurus S
Thesaurus S
Thesaurus S
Simple synonym app
Free

This free reference app helps you find synonyms and related words from a large database. Its simple interface and voice input support make it easy to discover new expressions and enhance your vocabulary.

Extensive word database (>90,000 candidates)Simple and intuitive operabilityVoice input support
🔍 Reference
(0)
ad-supported
16
LookUp: English Dictionary App
LookUp: English Dictionary App
LookUp: English Dictionary App
Build vocabulary, a word daily
Free

Enhance your English vocabulary with a daily word, interactive quizzes, and a comprehensive dictionary. Features include visual learning aids, audio pronunciations, and translations to over 20 languages. Ideal for learners and word enthusiasts.

Daily Word of the Day with illustrationsComprehensive English Dictionary & ThesaurusAudio pronunciations and example sentences
🔍 Reference
(3.1K)
free with in-app purchases
17
LexicEN Lite English
LexicEN Lite English
LexicEN Lite English
Offline Dictionary & Thesaurus
Free

This offline dictionary and thesaurus provides quick access to over 150,000 words with definitions, pronunciations, and example sentences. Easily look up words, manage favorites, and view search history without an internet connection.

Offline search150,000+ wordsDefinitions, pronunciation, examples
🔍 Reference
(1.2K)
free with in-app purchases
18
WordWeb Dictionary
WordWeb Dictionary
WordWeb Dictionary
Offline ad-free dictionary
Free

This app provides a comprehensive offline English dictionary and thesaurus with fast searching, spelling suggestions, definitions, and usage examples. It offers extensive word data and advanced search filters without requiring an internet connection.

Offline dictionary and thesaurusFast searchingSpelling suggestions
🔍 Reference
(85)
free
19
Dictionary and Thesaurus Pro
Dictionary and Thesaurus Pro
Dictionary and Thesaurus Pro
by TheFreeDictionary.com
$9.99

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.

Ad-free experienceOffline English dictionary and thesaurusOffline dictionaries in 13 languages
🔍 Reference
(2.5K)
paid
20
Vocabulary - Learn words daily
Vocabulary - Learn words daily
Vocabulary - Learn words daily
Erweitern Sie Ihren Wortschatz
Free

Expand your vocabulary with daily word learning and engaging games. This app offers customizable learning paths and difficulty levels to suit your English proficiency. Make vocabulary acquisition a fun and effective part of your routine.

Learn new words dailyCustomizable difficulty levelsSelect vocabulary categories
📚 Education
(207K)
free with in-app purchases

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