obstinately

mulishly obdurately

bullheadedly contumaciously determinedly doggedly firmly fixedly headstrongly indomitably inflexibly intractably opinionatedly persistently pertinaciously pigheadedly recalcitrantly resistantly resolutely resolvedly staunchly steadfastly stolidly tenaciously unamenably unflinchingly unimpressibly unreasonably unreasoningly unrelentingly unwaveringly unyieldingly willfully

docilely graciously obediently