Accepting pressure, substantially cut prominent article (6)
I believe the answer is:
splash
'prominent article' is the definition.
(a major story in a newspaper)
'accepting pressure substantially cut' is the wordplay.
'accepting' means one lot of letters goes inside another.
'pressure' becomes 'p' (abbreviation).
'substantially cut' becomes 'slash' ().
'p' put within 'slash' is 'SPLASH'.
(Other definitions for splash that I've seen before include "Display (a story) prominently in a newspaper" , "Accidentally get liquid on" , "Drop" , "Scatter liquid - prominent newspaper photo" , "Big media display -- bellyflop effect" .)