IPA: /pərˈfɛktɪvli/
KK: /pɜrˈfɛktɪvli/
In a way that indicates a completed action or state, often used in grammar to describe a verb aspect that shows an action has been finished.
She completed the project perfectively, ensuring every detail was addressed.
Perfectively → It is formed from "perfect" (from Latin "perfectus", meaning completed or finished) and "-ively" (meaning in a manner of). The word "perfectively" means in a manner that is complete or finished.
Think of something being 'completed' ('perfect') and done 'in a manner' ('-ively') — that's how you remember that 'perfectively' means to do something in a complete way.