confidently
🇺🇸
/ˈkɑːnfɪdəntli/
🇬🇧
/ˈkɒnfɪdəntli/
doing something with strong belief in your own skills and success
She spoke confidently during her presentation, showing she knew the topic well.
feeling sure that something will happen as you want or expect
You can confidently expect good weather tomorrow for the picnic.