adamant
ad·a·mant
/ˈædəmənt/ adj [more ~; most ~]
: 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
adamance (
the adamancy of her refusal
ad·a·mant·ly adv
He's adamantly opposed to coming with us.
