1The politician stubbornly refused to admit any wrongdoing, despite overwhelming evidence to the contrary.
2She worked stubbornly to finish the project, pouring all her energy into it despite the numerous setbacks.
3The company has stubbornly clung to its traditional business model, even as the market has shifted dramatically.
4He argued stubbornly that the new policy was unfair, but his colleagues ultimately outvoted him.
5The artist's stubbornly individualistic style has been both praised and criticized by critics, who see it as either innovative or self-indulgent.