energizer
noun
- that which energizes
Wiktionary
noun
Etymology: Etymology tree English energize Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English energizer From energize + -er.
- A person who, or a thing which, energizes.