This list of obsolete words in the English language needs to be spread. I came by it on the blog Like Being Read To From Dictionaries, who in turn came by it from Grognardia.
My favourites are:
Jargogle, v. - to confuse, jumble.
Ludibrious, adj. - apt to be a subject of jest or mockery.
Sanguinolency, noun - addiction to bloodshed.
I confess I delictate in corrades like this one, even if it causes perissology.