IPA: /ɪnˈfluːənʃəli/
KK: /ɪnˈfluːənʃəli/
In a way that has a lot of power or influence over people or events.
She spoke influentially at the conference, inspiring many to take action.
Influentially → It is formed from "influence" (from Latin "influere", meaning to flow into) and "-ly" (a suffix meaning in a manner of). The word "influentially" means in a manner that flows into or affects others, typically in a significant way.
Think of something that 'flows into' ('influere') and affects others — that's how we understand the meaning of influentially.