Standard bore (8)
I believe the answer is:
accepted
I believe this clue is a double definition.
'standard' is the first definition.
(similar in meaning)
'bore' is the second definition.
(accepting is a kind of bearing)
(Other definitions for accepted that I've seen before include "Said 'yes'" , "Received willingly" , "Received; approved" , "Took what was offered, being conventional" , "Receive willingly" .)