Mark ---, abstract artist (1903-70) (6)
I believe the answer is:
rothko
(Other definitions for rothko that I've seen before include "Sudden violent release" , "US abstract expressionist" , "Mark --, US artist" , "Mark --, US abstract painter" .)
I believe the answer is:
rothko
(Other definitions for rothko that I've seen before include "Sudden violent release" , "US abstract expressionist" , "Mark --, US artist" , "Mark --, US abstract painter" .)