IPA: /ɪˈfɛktɪvli/
KK: /ɪˈfɛktɪvli/
In a way that produces a desired result or is successful in achieving something.
She communicated her ideas effectively during the presentation.
Effectively → It is formed from "effect" (from Latin "effectus", meaning result or outcome) and the suffix "-ively" (meaning in a manner of). The word "effectively" means in a manner that produces a desired result or outcome.
Think of achieving a desired "effect" — that's why doing something "effectively" means doing it in a way that gets the results you want.