IPA: /ɪnˈvɪɡəreɪtə/
KK: /ɪnˈvɪɡəˌreɪtər/
A person or thing that gives energy or strength to someone or something.
The invigorator helped the team feel more energetic and motivated during the long meeting.
Invigorator → It is formed from "in-" (meaning into or upon) and "vigorare" (meaning to give strength or energy), combined with the suffix "-tor" (meaning one who). The word "invigorator" refers to one who imparts strength or energy to something or someone.
Think of someone who brings energy 'into' ('in-') and 'gives strength' ('vigorare') — that's why an invigorator is someone who energizes.