vitality

(noun) an energetic style. Synonyms: verve.

(noun) a healthy capacity for vigorous activity. Synonyms: energy, vim. Examples: "Jogging works off my excess energy." "He seemed full of vim and vigor."

(noun) (biology) a hypothetical force (not physical or chemical) once thought by Henri Bergson to cause the evolution and development of organisms. Synonyms: life force, vital force, elan vital.

(noun) the property of being able to survive and grow. Synonyms: animation. Example: "The vitality of a seed."