joss

noun3

1. •
   A Chinese household divinity; a Chinese idol.
2. •
   A heathen divinity.
3. •
   (informal) Luck.

   • She had twisted a piece of heather into her mail box for good joss, and this was the safety signal. — 1977

verb1

1. •
   (slang) To invalidate a fan theory or original element of a fanwork through the introduction of new canon or retconning.

   • Author's note part 2: I'm leaving it to the imagination of the reader what Cordelia saw of her future. Writing that out would be asking to be Jossed. — 2000