IPA: /ˌɪntəˈpɜːsənəli/
KK: /ˌɪntərˈpɜrsənəli/
In a way that relates to interactions between people.
She communicates interpersonally to build strong relationships with her colleagues.
Interpersonally → It is formed from "inter-" (meaning between) and "persona" (meaning person). The word "interpersonally" refers to interactions or relationships that occur between people.
Think of interactions that happen 'between' ('inter-') 'people' ('persona') — that's what interpersonally means.