which "word" are you pertaining anyway? ("The"?) let's put it this way: when you're buying a pair of shoes for instance, you would normally go with this kind of dialogue. you: "could I try this one?" (fitting the shoe) Ms. Li: "do you know what the size of your foot is?" you: "I'm not sure, but could you please help me finding that out for me?" Ms. Li: "okay, let's fit this shoe on so I would know which size is the right one." you: "thanks." :)

I am not sure what are you trying to say-_-