IPA: /ˈkɒnfɪdəntli/
KK: /ˈkɒnfɪdəntli/
In a way that shows you are sure of yourself and your abilities.
She spoke confidently during the presentation, impressing everyone with her knowledge.
Confidently → It is formed from "con-" (meaning with) and "fidere" (meaning to trust or have faith) and the suffix "-ly" (meaning in a manner). The word "confidently" means in a manner that shows trust or faith in oneself.
Think of having 'faith' ('fidere') in yourself and doing things 'with' ('con-') that belief — that's what it means to act confidently.