Greatest artist has sharp interior (4)
I believe the answer is:
tart
'sharp interior' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?
'greatest artist has' is the wordplay.
'has' indicates the answer is hidden within the clue.
'TART' is hidden in the letters of 'greatest artist'.
Can you help me to learn more?
(Other definitions for tart that I've seen before include "Biting - pastry" , "fruit in this dish" , "Acidic - sweet pastry" , "easy girl" , "loose woman" .)