http://shakespeare.about.com/od/studentresources/a/longest.htm
Stolen from Aluis, here’s a Word of the Moment I can’t see myself ever using, if only because it’s one heck of a mouthful to say:
The word “honorificabilitudinitatibus” is not a nonsense word at all, but rather it is the dative singular conjugation of a real medieval Latin word. Dante actually used it more than once, as did other writers of the period. A translation of it would be ‘the state of being able to achieve honors.’