Deprived of courage or confidence (8)
I believe the answer is:
unnerved
'deprived of courage or confidence' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for unnerved that I've seen before include "Daunted" , "Deprived of courage or confidence" , "Caused to lose courage, shaken" , "Rattled - perturbed" , "scared" .)