IPA: //əˈvɜːrsli//
KK: /əˈvɜrsli/
In a way that shows dislike or unwillingness; negatively or unfavorably.
She aversely responded to the suggestion, making it clear she was not interested.
Aversely → It is formed from "averse" (from Latin "aversus", meaning turned away) and the suffix "-ly" (meaning in a manner). The word "aversely" means in a manner that is turned away or opposed.
Think of being 'turned away' ('averse') and how that relates to doing something 'in a manner' ('-ly') that is opposed.