Post-Impressionist painter (7)
I believe the answer is:
cezanne
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">post-impressionist painter</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cezanne that I've seen before include "French artist" , "Paul --, French painter" , "Painter of the 'Card Players' series" , "French impressionist painter" , "Paul ---, post-Impressionist" .)