Answer:

ender

Answer	Crossword Clue
ENDER	Rear-... (auto accident)
ENDER	Rear-... (certain accident)
ENDER	What can follow week or rear

ENDER	Rear-... (road mishap)
ENDER	Rear-...
ENDER	It may follow East or West in London
ENDER	Rear's rear?
ENDER	East ... (certain Londoner)
ENDER	Bitter-...
ENDER	Follower of rear or week
ENDER	Bitter-... (die-hard)

ENDER	Rear for rear
ENDER	Terminator
ENDER	Week or rear follower