  |
WWWebster Thesaurus - http://www.merriam-webster.com/thesaurus.htm
Merriam-Webster Thesaurus |
  |
Thesaurus.com - http://thesaurus.reference.com/
Online version of Roget's II: The New Thesaurus, 3rd edition. |
  |
WordNet - a Lexical Database for English - http://wordnet.princeton.edu/
An on-line lexical reference system whose design is inspired by current psycholinguistic theories of human lexical memory. English nouns, verbs, adjectives and adverbs are organized into synonym sets, each representing one underlying lexical concept. Different relations link the synonym sets. From the Cognitive Science Laboratory, Princeton University |
  |
Roget's Thesauri - http://www.bartleby.com/thesauri/
Includes "Roget's International Thesaurus of English Words and Phrases" and Houghton-Mifflin's "Roget's II: The New Thesaurus," third edition. |
  |
Wordsmyth Educational Dictionary-Thesaurus - http://www.wordsmyth.net/
Integrated English dictionary and thesaurus. |