Okay, I got proactive and created a Dictionary that seems to work really well, though it's awfully large (176,049 lines adding up to ~14mb) and a full search through the whole list takes about 80 seconds. This becomes a problem since if your word isn't found at all or you make a typo, you have to wait though the whole search or pop out the SD card. I really think the search needs to be smarter since it should be relatively easy for the program to find a word within an alphabetical list (I guess this wouldn't apply to any non-dictionary files, but when we're using this type of file it could stand to be a lot faster).
Anyway, haven't had any problems with this dictionary besides the long search times, though it includes suffix definitions and those lines start with the "-" symbol. If anybody knows of a text editor that can go through and find any line starting with that symbol and simply delete it, I think this Dictionary would be great.
By the way, here's where it comes from:
http://www.mso.anu.edu.au/~ralph/OPTED/
I guess it's basically that same 1913 Webster's dictionary from Project Gutenberg.