/ˈædəmənt/
ad·am·ant
BrE /ˈædəmənt/
NAmE /ˈædəmənt/
determined not to change your mind or to be persuaded about sth
Eva was adamant that she would not come.
▸
ad·am·ant·ly
BrE /ˈædəməntli/
NAmE /ˈædəməntli/
His family were adamantly opposed to the marriage.