Word in a Well

There was a word in the bottom of a deep well, only dimly seen and impossible to make out, but unmistakably there. There was much excitement, even too much perhaps a cynic might have thought, but there was no such cynic- not to my knowledge- and the excitement was universal.
"Could this be the word we've all been looking for?! The Last Word!"
They haven't managed to retrieve it yet, but it can surely only be a matter of time.

What happens after the 'Last Word' has been found? Do we have to shut up forever, safe in the unspoken knowledge that there is nothing left to be said?
Your guess is as good as mine, but, to be honest, I'm not quite sure why they've all leapt to such conclusions about this word. It could be the gravest disappointment; enough to make cynics of all of them. Though then again maybe their excitement isn't misplaced, though again why they can expect so much from a word...it's all a bit confusing.

(edited using comments)