IPA: /ɪmˈpɑːrʧəli/
KK: /ɪmˈpɑrtʃəli/
In a way that is fair and not biased; treating all sides equally.
The judge listened impartially to both sides of the argument before making a decision.
Impartially → It is formed from "im-" (meaning not) and "partialis" (from Latin, meaning partial or biased) and the suffix "-ly" (meaning in a manner). The word "impartially" means in a manner that is not biased or partial, treating all sides equally.
Think of 'not biased' ('im-') and 'partial' ('partialis') to remember that 'impartially' means treating everyone equally.