Staggered towards the sunset in a crowd (9)
I believe the answer is:
awestruck
'staggered' is the definition.
(thesaurus)
'towards the sunset in a crowd' is the wordplay.
'towards the sunset' becomes 'west' (the sun sets in the west).
'in' is an insertion indicator.
'crowd' becomes 'ruck' (ruck can mean a crowd of people).
'a'+'ruck'='aruck'
'west' placed into 'aruck' is 'AWESTRUCK'.
(Other definitions for awestruck that I've seen before include "Suck water (anag) - completely astonished" , "open-mouthed" , "Showing a feeling of wonder and dread" , "overcome by wonder" , "Terrified" .)