mettlesomeness
/ˈmɛtəlsəmnəs/
noun
- The quality of being full of energy, courage, and spirit; liveliness and determination.
- The team's mettlesomeness helped them come back from a 10-point deficit.
- Her mettlesomeness in the debate impressed the judges and won her the trophy.
- The young horse's mettlesomeness made it a joy to ride across the open fields.