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