Feeling of anxiety or dread (5)
I believe the answer is:
angst
I believe this clue is a double definition.
'feeling of anxiety' is the first definition.
(I've seen this in another clue)
'dread' is the second definition.
(I know that dread can be written as angst)
(Other definitions for angst that I've seen before include "Anxious state" , "Acute, but unspecific, feeling of anxiety" , "Nagging worry" , "Acute anxiety about oneself" , "Feeling of guilt or remorse" .)