Stressful type? (7)
I believe the answer is:
italics
'stressful type?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for italics that I've seen before include "Sloping characters" , "Sloping typeface" , "Sloping typefaces" , "Typeface with letters slanting to the right" , "Letters slanting upward to the right" .)