As a visual language learner myself, I really like the way Visual Thesaurus.com works. Enter a word and synonyms, antonyms, and other related words appear on spokes around a hub. Lines show relationships between the words (red dotted lines indicate antonyms, gray dotted lines indicate when a word is an attribute of another, is similar to another, is a type of another word, etc.) and definitions, color coded according to part-of-speech, fill a column to the right.
Thesauruses are very useful tools, but displaying results visually makes it even more so. Other online thesauruses like Thesaurus.com organize search results in a more conventional way that is reminiscent of paper-bound versions: Columns of words are grouped by part-of-speech and meaning. Why not display these relationships in a way that makes their relationship intuitive and more immediately obvious? Thesaurus.com is also cluttered with lots of banner advertising and, interestingly, a link to Visual Thesaurus.com at the bottom.
In fact, I had thought I had seen visual thesaurus-style search results somewhere else on Google, but all I’ve been able to find is a now-defunct Google module that seems to have been the basis for Visual Thesaurus.com. Surely other applications could also benefit from a similarly visual approach, but I don’t know of many.
Visual Thesaurus.com is not free, but keep reading. A subscription to the online edition is available for $2.95 per month or $19.95 per year while a desktop version is available for $39.95. I’m not sure I use a thesaurus often enough to justify the expense, though it would be a nice resource to make available to students (group and institutional subscriptions are also available).
In my experience, after the three free searches non-subscribers are allowed, I can close the window and get three more free searches immediately. Aren’t you glad you kept reading? Although opening and reopening the search window is inconvenient, it seems to have slaked my appetite for synonyms so far. You’ll have to decide whether you want to pay for greater convenience, but Visual Thesaurus.com is a useful tool either way.