energizer

A person who, or a thing which, energizes.

Japanese Meaning

活力や元気を与える人または物

During the long meeting, Maria acted as the energizer, lifting everyone's spirits with her enthusiasm.

長い会議の間、マリアは周囲に活力を与える存在となり、彼女の熱意で皆の士気を高めた。

Sense（1）

A person who, or a thing which, energizes.

energizers

（ plural ）