Teenager given the French perfume after a party (10)
I believe the answer is:
adolescent
'teenager' is the definition.
(synonyms)
'the french perfume after a party' is the wordplay.
'the french' becomes 'le' ('the' in French).
'perfume' becomes 'scent' (synonyms).
'after' says to put letters next to each other.
'party' becomes 'do' (do is a kind of party).
'le'+'scent'='lescent'
'a'+'do'='ado'
'lescent' put after 'ado' is 'ADOLESCENT'.
'given' is the link.
(Other definitions for adolescent that I've seen before include "One growing" , "Immature" , "sixth-former, say" , "Youth" , "Young person" .)