Thanks, spicypadthai...but unfortunately that didn't reset my dictionary. Guess it's one of those things MS left out for some reason. Oh well, maybe they'll add it at some point.Only thing I found, and I'm not 100% about it: Settings > Privacy > Speech, inking, & typing, select Stop getting to know me. Looks like it clears a lot of info and you may not want all of it gone, especially since it doesn't say specifically the dictionary although I'm guessing it's included.