IPA: /ɪmˈpɜːrfɪktli/
KK: /ɪmˈpɜrfɪktli/
In a way that is not perfect or complete; having flaws or shortcomings.
She imperfectly understood the instructions, which led to some mistakes.
Imperfectly → It is formed from "im-" (meaning not) and "perfect" (from Latin "perfectus", meaning completed or finished) and the suffix "-ly" (meaning in a manner). The word "imperfectly" means in a manner that is not complete or finished.
Think of 'not' ('im-') being added to 'perfect' — this helps you remember that 'imperfectly' means not complete or finished.