Difficult actress rejects Oscar, finally (5)
I believe the answer is:
steep
'difficult' is the definition.
(as in a steep climb)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for steep that I've seen before include "Sheer, precipitous" , "Quickly rising" , "pickle" , "Almost perpendicular" , "Rapidly rising" .)