Common, everyday (8)
I believe the answer is:
ordinary
This clue is a double definition.
'common' is the first definition.
(similar in meaning)
'everyday' is the second definition.
(similar in meaning)
(Other definitions for ordinary that I've seen before include "Usual - bishop in his province" , "Plain" , "Unremarkable" , "Typical" , "Commonplace, avergae" .)