lack of confidence
I never overcame the diffidence I felt while standing in front of a class of students, and so after some years I quit my job as a university professor.
dis (not)#fidere (to trust) (Latin)
arrogance, gall, temerity
This word sounds similar to Confidence but is opposite in meaning. So, Diffidence means lacking self-confidence. diffi means deficiency and relate ffidence with confidence so lack of confidence it is like opposite of confidence means you are shy not confident diffidence -d + if + i + dance - I will feel shy