The big problem is writing Firefly fiction which evokes its futurespeak without just borrowing phrases wholesale. That's a problem with any fanfic: badfic sites always mentioning the borrowing of memorable phrases. I've been a member of the worthless word of the day mailing list for a long while now and it struck me tonight that here is a source for archaic and/or obscure words to use in Firefly fanfic. F'example:
picaroonSee? Hours of fun.
[Spanish picaron] /pik uh ROON/
1) a rogue or adventurer; a bohemian
2) a pirate, corsair
3) a small pirate ship
carnaptious
[fr. Sc. knap, to bite] /ka(r) NAP shus/
Scots & Irish dial. : bad-tempered, irritable, grumpy
cahooting
[fr. cahoots : collaboration, collusion]
conspiring, plotting