Need list of english words

[synergypoint]

I need a lengthy list of english common words to use to generate verification codes with.

Preferably I am looking for a dictionary type database that I can search on with criteria like word length and type (like noun, adjective, verb, etc.) and other parmaters so I can tweak the list.

I want to use real words because the display of the words will be somewhat mangled and in some cases letters may be mistaken. My thought was that if the letter is recognizable in the context of the word then it will be easier for users to copy the code off the screen correctly.

I haven't found an existing list I can use or a database that will let me output to a file the words only (no definitions or other info).

Does anyone know of anything I can use?

[tbone-tw]

Do you have access to a UNIX/Linux machine?

If you do look for the "words" file (on my Linux machine it's in usr/share/dict. Or you can use this to find it:

locate words | grep /words$

The file should contain about 45,000 words, one per line, no definitions.