Synonyms of obdurately

2 Syllables
staunchly, firmly
3 Syllables
willfully, headstrongly, doggedly, stolidly, steadfastly, mulishly, fixedly
4 Syllables
persistently, inflexibly, unflinchingly, tenaciously, adamantly, bullheadedly, intractably, pigheadedly, resistantly, resolvedly, unyieldingly
5 Syllables
unrelentingly, determinedly, indomitably, resolutely, unreasoningly, obstinately, unwaveringly, unimpressibly, pertinaciously, contumaciously, recalcitrantly, unamenably, unreasonably
6 Syllables
opinionatedly