WikiDiff
enwiktionary (latest) - Wikimedia dumps
Wiktionary, the free dictionary
Wiktionary Enlgish - Wikimedia
FOLDOC - Computing Dictionary
The Free On-line Dictionary of Computing contains terms from computing such as acronyms, jargon, programming languages, tools, architecture, operating systems, networking, theory, conventions, standards, mathematics, telecoms, electronics, institutions, companies, projects, products and history of computing.
Princeton WordNet
WordWeb: English dictionary
Open English WordNet
EN WordNet
YourDictionary
The easy to understand dictionary with example sentences, famous quotes and audio pronunciations. Includes: thesaurus, computer dictionary, investment dictionary, law dictionary and more.
Educalingo dictionary
Discover all that is hidden in the words. Find synonyms, uses, trends, statistics and much more. English dictionary with many images and usage examples.
Artha
Bab.la
Search translations in the dictionary and have fun learning languages with vocabulary lessons and many free games and quizzes.
Cambridge Dictionary
The most popular dictionary and thesaurus for learners of English. Meanings and definitions of words with pronunciations and translations.
Collins Dictionary
Pioneers in Language Reference for 200 years. Popular and trusted online dictionary with over 1 million words. Find definitions, meanings, synonyms, pronunciations, translations, origin and examples.
Diclib
dict.org
Dictionary by Merriam-Webster
The dictionary by Merriam-Webster is America's most trusted online dictionary for English word definitions, meanings, and pronunciation. #wordsmatter
Dictionary.com
Dictionary.com is the world’s leading online source for English definitions, pronunciations, word origins, idioms, Word of the Day, and more.
Dictionary.net
Free searchable encyclopedia with definitions, usage examples, thesaurus, antonyms, idioms, rhymes, quotes and other useful information.
English-Corpora
Compare genres, dialects, time periods. Search by PoS, collocates, synonyms, and much more.
Find Words
Freak Thesaurus
Frankensaurus.com | Research topics to find similar and related connections. Search and find enlightenment.
Free Dictionary
Free Dictionary definitions from language dictionary databases
Freelang Dictionary
Freeware dictionary program to download (Windows or Android) with many wordlists to browse offline or look up online. We also provide free human translation and professional translation.
OneLook Dictionary
Online Etymology Dictionary
The online etymology dictionary is the internet's go-to source for quick and reliable accounts of the origin and history of English words, phrases, and idioms. It is professional enough to satisfy academic standards, but accessible enough to be used by anyone. The site has become a favorite resource of teachers of reading, spelling, and English as a second language.
Oxford English Dictionary
The OED is the definitive record of the English language, featuring 600,000 words, 3 million quotations, and over 1,000 years of English.
Oxford Learner's Dictionaries
The largest and most trusted free online dictionary for learners of British and American English with definitions, pictures, example sentences, synonyms, antonyms, word origins, audio pronunciation, and more. Look up the meanings of words, abbreviations, phrases, and idioms in our free English Dictionary.
Reverse Dictionary
Sideways Dictionary
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