He's got the confidence to walk into a room of strangers and immediately start a conversation.
The training has given me the confidence to deal with any situation that arises.
She has ability but she lacks confidence.
I have every/complete confidence in her. She'll be perfect for the job.
As a result of such a bad appearance he lacks confidence. (First Certificate in English; B2; Korean)
Kate's new to the job, but I've got every confidence in her.
I have every confidence in your ability to reach a compromise. (Certificate of Proficiency in English; C2; Russian)
I'm sorry, she told me that in confidence.
His real name isn't Piggy but he told Ralph in confidence that they called him that in school because of his appearance. (Certificate of Proficiency in English; C2; German)