Sloping script (6)
I believe the answer is:
italic
'sloping script' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for italic that I've seen before include "Kind of typeface" , "Sloping type of print" , "Latin is" , "Relating to slanting handwriting or type" , "Print style used for emphasis, titles of books, etc" .)