Since we all write for GQ and I’m sure many do for other venues as well, here’s a really neat resource I just discovered for synonyms! It’swww.synonym-finder.com, and www.graphwords.com. Both have a very extensive database, but what I particularly love about graphwords.com is that it visually traces each word back to the root.
The two are run by the same folks, so if you go to synonym-finder, you can just hit the blue “graph words” button in the upper right-hand corner.