Astronomer or astrologer (9)
I believe the answer is:
stargazer
This clue is a double definition.
'astronomer' is the first definition.
(synonyms)
'astrologer' is the second definition.
(I've seen this before)
(Other definitions for stargazer that I've seen before include "Looker-up at night" , "Daydreamer" , "Astronomer, or dreamer" , "One looks up" , "Astronomer or astrologer" .)