Origin, beginning (7)
I believe the answer is:
genesis
This clue is a double definition.
'origin' is the first definition.
(synonyms)
'beginning' is the second definition.
(I know that genesis is a type of beginning)
(Other definitions for genesis that I've seen before include "Origin -- see sign (anag)" , "rock band" , "Beginning the holy book" , "Origin or formation of something" , "Origin; Bible book" .)