Feeling of dread (5)
I believe the answer is:
angst
'feeling of dread' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for angst that I've seen before include "Terrible butterflies" , "(German) anxiety state" , "Oppressive feeling of worry, guilt" , "Acute sense of remorse" , "Feeling of guilt or remorse" .)