Deceitful woman's to sharpen stone (9)
I believe the answer is:
dishonest
'deceitful' is the definition.
(similar in meaning)
'woman's to sharpen stone' is the wordplay.
'woman's' becomes 'dis' (short for Diana).
'to sharpen' becomes 'hone' (honing is a kind of sharpening).
'stone' becomes 'st'.
'dis'+'hone'+'st'='DISHONEST'
(Other definitions for dishonest that I've seen before include "Fraudulent" , "cheat" , "cheating" , "Insincere" , "Not on the level" .)