Question purchasing the French garment (7)
I believe the answer is:
doublet
'garment' is the definition.
(doublet is a kind of garment)
'question purchasing the french' is the wordplay.
'question' becomes 'doubt' (synonyms).
'purchasing' indicates putting letters inside (some letters take possession of others).
'the french' becomes 'le' ('the' in French).
'doubt' placed around 'le' is 'DOUBLET'.
(Other definitions for doublet that I've seen before include "Historical jacket" , "Short jacket" , "Former male, close-fitting body garment" , "Pair of similar things" , "Close-fitting padded jacket of Tudor and Stuart England" .)