Best free offline dictionary program...

[Antoneo]

Ok, I've just gotten tired of using the google toobar to point me to dictionary.com. So what do you use to look up words whilst browsing the web?
Offline meaning a program on the computer. Often, MS Word only suffices as a thesaurus.

 

[FoBoT]

when you say offline, you mean a paper book?
or like the one built into Word? i just use Word if i don't use dictionary.com or google