1. the quality or state of being intensely passionate, enthusiastic, or earnest

Examples

• The fervidness of her political activism inspired many young voters.
• He spoke with such fervidness about his love for classical music that everyone in the room felt moved.
• The team's fervidness on the field was evident in every play they made.
• Her fervidness for social justice drove her to volunteer every weekend.
• The preacher's fervidness resonated deeply with the congregation.
• His fervidness about environmental protection made him a powerful advocate for change.