Advance in Paris, especially (4)
I believe the answer is:
rise
'advance' is the definition.
(synonyms)
'in paris especially' is the wordplay.
'in' indicates a hidden word.
'RISE' is hidden in the letters of 'paris especially'.
(Other definitions for rise that I've seen before include "Ascent" , "Ascend" , "To swell (bread)" , "Growth" , "Get out of bed, sire" .)