The Free Dictionary
The World’s most comprehensive free online dictionary, thesaurus, and encyclopedia with synonyms, definitions, idioms, abbreviations, and medical, financial, legal specialized dictionaries
16 Alternatives To The Free Dictionary
Apple Dictionary
Your Mac also comes with a versatile Dictionary application.
Artha
Artha is a handy thesaurus based on WordNet with distinct features like global hotkey look-up…
Blueseal Dictionary
Comprehensive dictionary of English, German, Spanish and French including synonyms.
Collins English Dictionary
The official Collins English Dictionary online.
Google
Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web
Merriam-Webster
No other dictionary matches M-W’s accuracy and scholarship in defining word meanings. Our pronunciation help, synonyms, usage and grammar tips set the standard.
Oxford Dictionaries
Free online dictionary of British English and American English from Oxford.
SayWhat
A fun and informative Video Urban Dictionary.
StarDict
StarDict is a Cross-Platform and international dictionary Software.
The Online Slang Dictionary
Learn thousands of real slang words or add your own.
Urban Dictionary
Urban Dictionary is a Web-based dictionary of slang words and phrases.
Wiktionary
Open Source wiki-dictionary by the Wikimedia foundation
WordReference
WordReference is a free online Oxford dictionaries for Spanish, French, Italian, German and more.
Wordnik
the biggest online English dictionary, by number of words