Wanted: A Smarter Thesaurus

When writing songs and blog posts, I am always on the hunt for the exact right words. Often I head to a thesaurus because I can’t remember the precise word for the concept I’m thinking of. The problem is that usually the thesaurus doesn’t give me the word I’m searching for, so I have to search lots of different words until I finally (hopefully) get that word that has been eluding me. I need a thesaurus that can accept multiple words and kick back a list of possibilities that are “averaged equivalents” of those words.

Example

Maybe these are bad examples, but it could work something like this:

• eager + emotional = anxious, nervous, tense
• qualify + judge = evaluate, estimate, rank, choose
• orange + pink = salmon, grapefruit, coral

Other possible features

• Input more than two words for averaging
• Omit or limit to certain attributes, topics, languages, etc.
• Select language difficulty range (e.g. low, medium, high)

Does something like this already exist? If not, does anyone have the desire and/or know-how to build one? Google, I know you’re indexing this, but are you reading it?