Artist didn't admire later impressionist leaders (4)
I believe the answer is:
dali
'artist' is the definition.
(Salvador Dali)
'didn't admire later impressionist leaders' is the wordplay.
'leaders' suggests taking the first letters.
The initial letters of 'didnt admire later impressionist' is 'DALI'.
(Other definitions for dali that I've seen before include "Salvador . . . . was great Spanish surrealist painter" , "Salvador -, twentieth century artist" , "Controversial painter" , "Surrealist Spanish painter, d. 1989" , "Tree" .)