• Merriam-Webster's Collegiate Dictionary, Tenth Ed. allows regular and wildcard searching, so you can find all the words ending in a given suffix. 
  • Your dictionary.com (A Web of Online Dictionaries) provides links to more than 400 dictionaries in more than 130 different languages.
  • OneLook Dictionaries is the best place to look up a word or term in an Internet dictionary or glossary. Free search access to a frequently updated database of words, terms, names, acronyms vs Internet links to on-line dictionaries or glossaries.
  • Dictionary.com is a free online dictionary, thesaurus, translator, word of the day, crossword puzzles and word games, and vocabulary learning resources for many languages.
  • Bartleby.com is an online publication of The American Heritage Dictionary, Fourth Edition. Featuring 70,000 audio word pronunciations, 900 full-page illustrations and over 10,000 new words and senses.
  • Roget's Thesaurus is searchable by headword or full text.
  • Webster Thesaurus online version of the Merriam-Webster Thesaurus.
  • Thesaurus.com is the online version of Roget's Thesaurus of English words and phrases.
  • Webster Gateway provides a hypertext point-and-click interface for accessing various dictionary services on the Internet. 
  • VoiceNation List of Online Dictionaries, Thesauri, Acronyms and Encyclopedias and More! 

GENERAL DICTIONARIES

SPECIALIZED DICTIONARIES