Attendants in French trip get older (9)
I believe the answer is:
entourage
'attendants' is the definition.
(I've seen this before)
'in french trip get older' is the wordplay.
'in french' becomes 'en' ('in' in French).
'trip' becomes 'tour' (a journey or expedition).
'get older' becomes 'age' (synonyms).
'en'+'tour'+'age'='ENTOURAGE'
(Other definitions for entourage that I've seen before include "Supportive group" , "A star may have one" , "Following" , "Group of followers" , "Retinue, cortege" .)