Lacking in confidence (6)
I believe the answer is:
unsure
(Other definitions for unsure that I've seen before include "Not certain, doubtful" , "Far from certain" , "Diffident, uncertain" , "self-confidence" , "Not certain, undecided" .)
I believe the answer is:
unsure
(Other definitions for unsure that I've seen before include "Not certain, doubtful" , "Far from certain" , "Diffident, uncertain" , "self-confidence" , "Not certain, undecided" .)