A quaintly pleasing French accent? (5)
I believe the answer is:
acute
'french accent' is the definition.
(I've seen this before)
'a quaintly pleasing' is the wordplay.
'quaintly pleasing' becomes 'cute' (I've seen this before).
'a'+'cute'='ACUTE'
(Other definitions for acute that I've seen before include "Perspicacious" , "(Of an angle) less than 90 degrees" , "Sharp, angle or mind" , "Sharp - sort of French accent" , "Canny" .)