IPA: /kənˈfɜːr.məd.li/
KK: /kənˈfɜrmdli/
In a way that is confirmed or verified; with certainty or assurance.
The results of the experiment were confirmedly accurate, leading to further research.
Confirmedly → It is formed from "confirmed" (from Latin "confirmare", meaning to strengthen or establish) and "-ly" (meaning in a manner). The word "confirmedly" means in a manner that is established or strengthened.
Think of something that is 'strengthened' ('confirmare') and done 'in a manner' ('-ly') — that's why confirmedly means done in a way that is established.