IPA: /ˈædəməntli/
KK: /ˈædəməntli/
In a way that shows you are firm and determined about something, refusing to change your mind or agree with others.
She adamantly refused to change her mind about the decision.
Adamantly → It is formed from "adamant" (from Old French *adamant*, meaning unyielding or inflexible) and the suffix "-ly" (meaning in a manner of). The word "adamantly" means in a manner that is unyielding or inflexible.
Think of someone being 'unyielding' or 'inflexible' — that's what it means to act adamantly.