Dictionaries, Thesauri & Grammars

  • American Heritage Dictionary of the English Language - Fourth edition, including encyclopedia, thesaurus, quotations, and English usage
  • Bartleby.com - Great books online, Roget's II: The New Thesaurus, 3rd edition, Containing synonyms and cross-references in an easy-to-use format, featuring succinct word definitions and an innovative hyperlinked category index
  • Brewer's Dictionary of Phrase and Fable - Giving the derivation, source, or origin of common phrases, allusions, and words that have a tale to tell
  • Cambridge Dictionaries Online - Monolingual and bilingual dictionaries for learners of English
  • Dictionary.com - Searchable by word, providing source of each entry with source links, and links to bookstore, fun and games, tools, translator, word of the day, language resources and other dictionaries, by Lexico Publishing Group, LLC
  • dictionary.msn.com - Searchable Encarta World English Dictionary
  • English-Spanish Dictionary - Compilation of general and academic terminology that students and professionals encounter when reading professional literature with a
    particular emphasis on information organisation and retrieval (library science/librarianship)
  • Merriam-Webster Online - Language Center, searchable by word, with links to dictionary, thesaurus, and unabridged.
  • OneLook - Search dictionary web sites for words and phrases
  • Oxford English Dictionary - Full-text searching of all OED's definitions, etymologies, and quotations, searchable by wordhttp://www.symbols.com">Symbols.com - World's largest encyclopedia of symbols, providing information about modern Western symbols--more than 2,500 signs in 54 categories
  • Thesaurus.com - Searchable dictionary and thesaurus
  • WordReference.com - Translate a word from French, Italian, Spanish & German
  • Word Spy - Devoted to recently coined words and phrases, old words that are being used in new ways, and new words and phrases that have appeared in newspapers, magazines, books, press releases, and Web sites.
  • Wordsmyth - Searchable dictionary and thesaurus
  • yourDictionary.com - database of The American Heritage® Dictionary of the English Language, 4th edition (AHD), published by Houghton-Mifflin Company, as well as of the world-famous 3rd edition of the Roget's Thesaurus (soon)
  • wiktionary - Collaborative project to produce a free multilingual dictionary in every language with definitions, etymologies, pronunciations and quotations, as the lexical companion to the open-content encyclopedia Wikipedia