IPA: /ɪnˈvɪɡəˌreɪʃən/
KK: /ɪnˈvɪɡəˌreɪʃən/
The process of making someone feel more energetic or lively.
After a long walk, I felt a sense of invigoration that lifted my spirits.
Invigoration is formed from "in-" (meaning into or within) and "vigorare" (meaning to give strength or energy). The word describes the act of bringing energy or strength into something, thus revitalizing it.
Think of bringing energy 'into' ('in-') something to make it stronger or more lively.