1. the quality of being enthusiastic, energetic, or exuberant; bubbling over with excitement or liveliness
Usage: formal; often used to describe a person's temperament or mood
2. the act or state of boiling or bubbling; effervescence
Usage: technical; rare in modern usage

Examples

• Her ebulliency was contagious; everyone around her felt energized by her positive attitude.
• The child's ebulliency made the long car ride enjoyable for the whole family.
• Despite the setback, he maintained an ebulliency that inspired his teammates.
• The ebulliency of the crowd at the concert was palpable as the band took the stage.
• She approached each new project with such ebulliency that her colleagues admired her work ethic.
• The ebulliency of the boiling water caused the lid to rattle on the pot.