Synonyms of adamantly

2 Syllables
staunchly, strictly
3 Syllables
intently, constantly, stubbornly, doggedly, stolidly, steadfastly
4 Syllables
persistently, unchangeably, tenaciously
5 Syllables
decisively, obdurately, perseveringly, resolutely, purposefully, obstinately, unwaveringly, pertinaciously
6 Syllables
indefatigably