adamant
adjective uk/ˈæd.ə.mənt/ us/ˈæd.ə.mənt/
固执的；坚决的，坚定不移的
impossible to persuade, or unwilling to change an opinion or decision
[ + that ] I've told her she should stay at home and rest but she's adamant that she's coming. 我告诉过她应该在家休息，可她坚持要来。