noun any of the various theories or doctrines or philosophical systems that attempt to explain the phenomena of the universe in terms of some immanent force or energy.
noun active strength of body or mind.
— synonyms: vigor, vigour, heartiness
noun the activeness of an energetic personality.
— synonyms: pizzazz, pizzaz, oomph, zing
Examples
“The fact that the war is no longer the main issue in the election points to the dynamism of foreign affairs.”