opposite of 'confident'

[Tan Elaine]

What is the opposite of 'confident'? I thought it was 'inconfident' but I cannot find the word in the dictionaries that I have.

Thanks in advance.

 

[5jj]

What is the opposite of 'confident'? I thought it was 'inconfident' but I cannot find the word in the dictionaries that I have.
.

There is no 'in-/un-/ confident'. We can say 'lacking in confidence', or: Antonym of confident | Synonym.com

 

[Barb_D]

How about insecure?