In an obdurate manner; stubbornly, intractably or inflexibly(adverb)
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Use "obdurately" in a sentence
"a dictator who "obdurately" refused to change his ways."
"I first read this story while obdurately at the beach with a friend on a cold, wet day."
"However, if the Commission considers the case unusually important, or if the government obdurately ignores the recommendations, the Commission can bring the case to the Inter-American Court of Human Rights."