Integrated English dictionary and thesaurus.

An online thesaurus and dictionary of over 145,000 words that you explore using an interactive map. It's a tool for people who think visually. The most fun you've ever had with words. The Visual Thesaurus was built using Thinkmap, a data visualization technology.

Free online English thesaurus/synonym finder with over 2.5 million synonyms.

Thesaurus.com - the largest and most trusted free online thesaurus brought to you by Dictionary.com. Quickly find synonyms and antonyms.