Crossword Genius

Perfecting (6)

Ross

I believe the answer is:

honing

'perfecting' is the definition.
('hone' can be a synonym of 'perfect')

This is all the clue.

(Other definitions for honing that I've seen before include "Making sharp" , "Sharpening, say razor" , "Sharpening on a stone" .)

I've seen this clue in The Guardian.
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