confidently
adv. manner B1 Intermediate US //ˈkɑnfədəntɫi// UK //kˈɒnfɪdəntli// con·fi·dent·ly
adv. in a way that shows you trust yourself or your knowledge. You use it when you are sure about something and do not feel shy or doubtful.
adv. in a manner showing self-assurance, certainty, or lack of hesitation. Typically modifies verbs of speech, action, or belief.
She answered the difficult question confidently.
The candidate spoke confidently during the interview, making eye contact with every panel member.
Despite the overwhelming evidence against him, he maintained his innocence confidently, refusing to acknowledge the possibility of error.
From confident + -ly.