Defiantly is defined as something done in a rebellious or disrespectful manner, not conforming to what is asked or expected.
When your mother asks you to please close the door quietly and you rebelliously slam it, this is an example of a time when you defiantly slam the door.
- She met his gaze defiantly for a moment longer, but he made no attempt to argue.
- When Frontenac answered defiantly, Phips attacked the place; but he was repulsed and in the end sailed away unsuccessful.
- "Scat," he ordered, and the Bird Song occupants all slowly complied—all but Fred O'Connor who defiantly sat on the bed, taking notes.