ad·a·mant 
/ˈædəmənt/ adjective
/ˈædəmənt/ adjective [more adamant; most adamant] : not willing to change an opinion or decision : very determined
▪ She is an adamant [=strong] defender of women's rights. ▪ We've tried to talk him into coming with us, but he's adamant about staying here. ▪ an adamant refusal
▪ She is an adamant [=strong] defender of women's rights. ▪ We've tried to talk him into coming with us, but he's adamant about staying here. ▪ an adamant refusal
— adamance or adamancy noun [noncount]
▪ the adamancy of her refusal
▪ the adamancy of her refusal
— ad·a·mant·ly adverb
▪ He's adamantly opposed to coming with us.
▪ He's adamantly opposed to coming with us.
