source: [バーン｜無料GIF画像検索 GIFMAGAZINE 3521380]

the feeling or belief that one can rely on someone or something; firm trust:

«…に対する/…という» 信頼, 信用 «in/that節»

e.g. we had every confidence in the staff

e.g. he had gained the young man's confidence.

the state of feeling certain about the truth of something:

e.g. it is not possible to say with confidence how much of the increase in sea levels is due to melting glaciers.

a feeling of self-assurance arising from one's appreciation of one's own abilities or qualities:

«…への/…についての/…という» 自信; 確信 «in/about/that節» ; 大胆さ, ずうずうしさ

e.g. she's brimming with confidence

e.g. in singular : he would walk up those steps with a confidence he didn't feel.

the telling of private matters or secrets with mutual trust:

e.g. someone with whom you may raise your suspicions in confidence.

(often confidences) a secret or private matter told to someone under a condition of trust:

｟かたく/文｠ 打ち明け話, 秘密

e.g. the girls exchanged confidences about their parents.

in a position of trust with someone.

tell someone one's secrets.

late Middle English: from Latin confidentia, from confidere ‘have full trust’ (see confident).