/ˈstedfɑ:st; US -fæst ||; ˈstɛdˌfæst/adj not changing in your attitudes or aims 坚定的；不动摇的: steadfast loyalty 忠贞不渝He remained steadfast in his determination to bring the killers to justice.他要把杀人凶手绳之以法的决心一直没有动摇。 ➔steadfastlyadv: She steadfastly refused to speak. 她坚决不肯发言。