We've tried to talk him into coming with us, but he's adamant about staying here.
<remained adamant about getting the actor's autograph even after he had disappeared backstage>
I am keen not to share my genetic code with my insurer, I am keen that my doctor should know it and use it, but I am adamant to the point of fanaticism that it is my decision. —Matt Ridley, Genome, 1999
Arrive to find child physically intact but … adamant that he will not remain another minute in Ski Bunny program. Despite their ‘professionalism,’ staff members eagerly concur. —Christopher Buckley, New Yorker, 10 Mar. 1997
In the years following the First World War, the debts of our wartime allies and others came to be considered a serious burden on international commerce and well-being. Calvin Coolidge was adamant on repayment. —John Kenneth Galbraith, New Yorker, 21 Apr. 1986