Best Slang Dictionary English Apps

206+ iOS apps curated and reviewed

4.4 avg rating
18 free apps
Updated May 2026

Finding the right slang dictionary english app can be overwhelming with so many options. We've analyzed 206+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for Slang Dictionary English

Dictionary.#1

Dictionary. by Farlex, Inc.

by TheFreeDictionary.com
Editor's Choice
šŸ” Reference
4.8😊(14K ratings)
FreeAdsIn-App Purchases
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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.

What We Love

  • šŸš€ Comprehensive and detailed definitions
  • šŸ‘ Helpful thesaurus and translation features
  • šŸŽ® Fun word games and activities
  • šŸ“š Vast amount of information beyond just definitions

Room to Improve

  • šŸ” Cluttered interface with too many ads
  • šŸ› Occasional crashes and bugs
  • šŸ” Difficulty finding specific settings or features
Dictionary.com: English Words#2

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

Dictionary, Thesaurus, Vocab
Strong Contender
šŸ” Reference
4.7😐(19K ratings)
FreeAdsIn-App Purchases
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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!

What We Love

  • šŸš€ Robust dictionary and thesaurus
  • šŸ¤“ Helpful resources like blogs and articles
  • šŸ’” Useful word games and puzzles
  • šŸ‘ Easy to use and navigate

Room to Improve

  • šŸ› Inconsistent search results and missing definitions
  • šŸ’ø Aggressive ads even after paid upgrades
  • 🤯 Frequent crashes and performance issues

More Slang Dictionary English apps to explore

4
Idioms and Slang Dictionary
Idioms and Slang Dictionary
Idioms and Slang Dictionary
Phrase meanings and history
Free

Discover the essence of idioms and slang with a comprehensive dictionary offering meanings, history, and examples for over 61,000 terms, including idioms, slang, proverbs, and more. Search, learn, and master conversational English with clear definitions, audio pronunciations, and bookmark features. Explore the world of idiomatic expressions and download now for a free, authoritative resource.

šŸ” Reference
(1K)
5
British Slang! New Dictionary of Urban Slangs Quiz
British Slang! New Dictionary of Urban Slangs Quiz
British Slang! New Dictionary of Urban Slangs Quiz
by Michael Quach
Free
šŸ“š Books
(48)
6
English Slang Cards
English Slang Cards
English Slang Cards
All common slang in one app
Free

This application offers a comprehensive collection of 500 flashcards featuring common American and British slang words, phrases, and expressions, complete with example sentences, images, and pronunciation guides. By learning these informal words and phrases, users can improve their conversational English skills and expand their vocabulary in a fun and easy way.

šŸ“š Education
(218)
7
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Oxford Dictionary & Thesaurus
Thesaurus & Offline Vocabulary
Free

Access one of the highest authorities in language reference with the power of 15 major Oxford dictionaries at your fingertips. Explore advanced search and learning tools for a comprehensive linguistic experience.

šŸ” Reference
(28K)
8
Merriam-Webster Dictionary
Merriam-Webster Dictionary
Merriam-Webster Dictionary
by Merriam-Webster, Inc.
Free

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].

šŸ” Reference
(320K)
9
Australian Slang: Urban Aussie Slang Dictionary
Australian Slang: Urban Aussie Slang Dictionary
Australian Slang: Urban Aussie Slang Dictionary
by Michael Quach
Free
šŸ“š Books
(21)
10
American Slang Colloquialism!
American Slang Colloquialism!
American Slang Colloquialism!
Urban Dictionary Slangs Quiz!
Free
šŸ“š Books
(42)
11
English language: Learn & Play
English language: Learn & Play
English language: Learn & Play
ā„–1 Phrases and Idioms App
Free

Learn English effortlessly with our interactive app that provides grammar lessons, vocabulary practice, and speaking exercises. Start your language learning journey today!

šŸ“š Education
(7.6K)
12
Spanish Dictionary - Dict Box
Spanish Dictionary - Dict Box
Spanish Dictionary - Dict Box
English Spanish Translation
Free

A powerful English to Spanish translation tool offering detailed definitions, examples, synonyms, and language learning features. Enhance your language skills and easily translate words and phrases on-the-go.

šŸ” Reference
(8.3K)
13
Urban Dictionary - Daily Slang
Urban Dictionary - Daily Slang
Urban Dictionary - Daily Slang
Slang & Internet Language
Free
🌟 Lifestyle
(12)
14
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.

šŸ” Reference
(22K)
15
Vietnamese best dict
Vietnamese best dict
Vietnamese best dict
by Thanh Nguyen Van
Free

Discover the ultimate Vietnamese-English dictionary with an extensive vocabulary, detailed word descriptions, and numerous examples for each word. Experience a user-friendly interface for seamless navigation. Start exploring now for comprehensive language assistance!

šŸ“š Education
(440)
16
UrbanWatch - Slang Dictionary
UrbanWatch - Slang Dictionary
UrbanWatch - Slang Dictionary
Slang dictionary on your wrist
Free

This application brings a popular slang dictionary to your devices, allowing you to view daily words, search for definitions, and save favorites that sync across all your devices. Download it for free to access a vast collection of slang terms and share your favorite definitions with friends.

šŸ” Reference
(8)
17
WordWeb Dictionary
WordWeb Dictionary
WordWeb Dictionary
Offline ad-free dictionary
Free

Discover a comprehensive offline dictionary and thesaurus with fast search, spelling suggestions, definitions, synonyms, and more. Enjoy ad-free browsing, usage examples, and unique search features without the need for an internet connection. Explore WordWeb Dictionary for a seamless word lookup experience.

šŸ” Reference
(85)
18
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.

šŸ“š Education
(11K)
19
Slang: Professional English
Slang: Professional English
Slang: Professional English
Learn professional English!
Free

This adaptive English learning app offers personalized, career-specific courses to help users go beyond basic English and unlock their potential as bilingual professionals. With a focus on field-specific knowledge and real-time feedback, it provides a comprehensive solution for individuals and organizations to quickly reach fluency and master all four language skills.

šŸ“š Education
(31)
20
Dictionary Offline - Dict Box
Dictionary Offline - Dict Box
Dictionary Offline - Dict Box
Dictionary for All Languages
Free

Discover a comprehensive offline dictionary app for all languages with Dict Box. Access definitions, translations, and synonyms on-the-go. Download now for quick and easy language reference.

šŸ” Reference
(11K)