Single admirer spoilt by a Parisian (9)
I believe the answer is:
unmarried
'single' is the definition.
(I've seen this before)
'admirer spoilt by a parisian' is the wordplay.
'spoilt' is an anagram indicator.
'by' means one lot of letters go next to another.
'a parisian' becomes 'un'.
'admirer' anagrammed gives 'married'.
'married' put after 'un' is 'UNMARRIED'.
(Other definitions for unmarried that I've seen before include "Status of a bachelor" , "Single in terms of partnership" , "Not yet wed" .)