Translation of steadfastly in Spanish:

steadfastly

categóricamente, adv.

Pronunciation /ˈstɛdˌfæstli/ /ˈstɛdfɑːstli/

adverb

literary
  • 1

    (refuse) categóricamente
    (refuse) rotundamente
    (uphold) tenazmente
    (gaze) fijamente
    she remained steadfastly loyal to him le siguió siendo incondicionalmente fiel