Best Merriam Webster Thesaurus Apps

173+ iOS apps curated and reviewed

4.6 avg rating
14 free apps
Updated June 2026

Merriam is the household name in merriam webster thesaurus, but it's far from the only option. We track 173+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Merriam Webster Thesaurus

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
Thesaurus dictionary- Wordloop#2

Thesaurus dictionary- Wordloop by LEAP STUDIO

Synonyms power up vocabulary
Strong Contender
🔍 Reference
4.5(258 ratings)
FreeIn-App Purchases
Thesaurus dictionary- Wordloop screenshot 1
Thesaurus dictionary- Wordloop screenshot 2
Thesaurus dictionary- Wordloop screenshot 3
Thesaurus dictionary- Wordloop screenshot 4
Thesaurus dictionary- Wordloop screenshot 5
Thesaurus dictionary- Wordloop screenshot 6

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.

Oxford Dictionary & Thesaurus#3

Oxford Dictionary & Thesaurus by MobiSystems, Inc.

Thesaurus & Offline Vocabulary
Worth Considering
🔍 Reference
4.6😐(28K ratings)
FreeAdsIn-App Purchases
#73in Reference
Oxford Dictionary & Thesaurus screenshot 1
Oxford Dictionary & Thesaurus screenshot 2
Oxford Dictionary & Thesaurus screenshot 3
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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 Merriam Webster Thesaurus apps to explore

4
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
(2.9K)
freemium
5
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary.com: English Words
Dictionary, Thesaurus, Vocab
Free

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.

2 million+ definitions and synonymsWord of the DayExample sentences
🔍 Reference
(328K)
free with in-app purchases
6
Terminology
Terminology
Terminology
Dictionary•Thesaurus•Research
Free

Explore the English language with this comprehensive tool. It offers dictionary and thesaurus functions, along with research capabilities to dive deeper into words and phrases. Extend its functionality with custom resources for web and app searches.

Offline U.S. English dictionarySynonyms, antonyms, and word relationsCustomizable resources for web and app searches
🔍 Reference
(1K)
freemium
7
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
8
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Merriam-Webster Dictionary+
Premium Ad-free Dictionary
$9.99

Access America's leading dictionary with over 15,000 extra entries for people and places. Enjoy offline access, voice search, and daily vocabulary builders. This app offers expert word guidance with a thesaurus and example sentences.

Ad-free experience15,000+ premium entriesOffline dictionary access
🔍 Reference
(22K)
freemium
9
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
10
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
11
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
12
Webster Roget's A-Z Thesaurus
Webster Roget's A-Z Thesaurus
Webster Roget's A-Z Thesaurus
New World® English reference
$12.99

Access over 300,000 synonyms and antonyms arranged alphabetically for precise communication. This comprehensive linguistic resource offers extensive word comparisons, examples, and grammatical information. Enhance your vocabulary with customizable themes, advanced search tools, and engaging learning features.

300,000+ synonyms and antonymsAlphabetical arrangementSearch autocomplete
🔍 Reference
(129)
paid
13
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
14
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
(747)
paid
15
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
16
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
(14K)
free with in-app purchases
17
Collins Dictionary & Thesaurus
Collins Dictionary & Thesaurus
Collins Dictionary & Thesaurus
Complete English reference
$39.99

Access a comprehensive English language reference with over 500,000 dictionary entries and 377,000 thesaurus entries. Features include advanced search tools, customizable themes, and vocabulary building aids.

Extensive dictionary with 500,000+ entriesLarge thesaurus with 377,000+ entriesAdvanced search tools (autocomplete, keyword, camera, voice)
🔍 Reference
(90)
paid
18
RhymeZone
RhymeZone
RhymeZone
The official RhymeZone app!
$2.99

This app is a powerful rhyming dictionary and thesaurus that helps you find the perfect word. It offers rhymes, synonyms, antonyms, and related words, with offline capabilities and an optional online connection for more features. A unique "Poet Maker" helps find words matching both rhyme and meaning.

Rhyming dictionaryThesaurusSynonyms and antonyms
🔍 Reference
(971)
free
19
LinkedWord Thesaurus
LinkedWord Thesaurus
LinkedWord Thesaurus
Dictionary and Thesaurus
Free

This reference app provides a comprehensive dictionary and thesaurus with over 150,000 definitions. It groups synonyms and offers pronunciation guides and image searches to enrich understanding. Ideal for students, teachers, and translators seeking an accessible tool.

Dictionary (WordNet)Thesaurus150,000 word definitions
🔍 Reference
(0)
free with in-app purchases
20
German Dictionary & Thesaurus
German Dictionary & Thesaurus
German Dictionary & Thesaurus
with English Translations
Free

Access a comprehensive German dictionary and thesaurus with English translations. Look up definitions, verb conjugations, and pronunciations. This app offers an offline German dictionary with over 58,000 words, advanced search, and bookmarking features.

Offline German dictionaryGerman to English translationsAudio pronunciations
🔍 Reference
(409)
free with in-app purchases