Friend in Paris, clever and cheerful (7)
I believe the answer is:
amiable
'cheerful' is the definition.
(thesaurus)
'friend in paris clever' is the wordplay.
'friend in paris' becomes 'ami' (French for 'friend').
'clever' becomes 'able' (I've seen this before).
'ami'+'able'='AMIABLE'
'and' acts as a link.
(Other definitions for amiable that I've seen before include "Lovable, friendly" , "'Cordial, friendly (7)'" , "'Affable, genial (7)'" , "Friendly, kindly" , "Charming" .)