adamantly
adverb
UK/ˈæd.ə.mənt.li/
US/ˈæd.ə.mənt.li/
Definitions of adamantly adverb
in a firm and resolute manner, indicating an unwillingness to be persuaded or to change one's mind
She adamantly refused the proposal.
He adamantly denied any involvement in the matter.
They adamantly defended their position despite facing much pressure.