A quaintly pleasing accent (5)

I believe the answer is:

acute

'accent' is the definition.
(acute is a kind of accent)

'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 "Severe; French accent" , "Keen; severe" , "Excruciating" , "Very perceptive, having sharp mind" , "Sharp, angle or mind" .)

I've seen this clue in The Telegraph.

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