Incisive, potentially penetrative (7)
I believe the answer is:
pointed
This clue could be a double definition.
'incisive' is the first definition.
(I've seen this in another clue)
'penetrative' is the second definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I can't see?
'potentially' is the link.
Can you help me to learn more?
(Other definitions for pointed that I've seen before include "Sharply tapered" , "Direct and obvious in meaning" , "With a tapered tip" , "keen" , "sharpish" .)