In a steadfast manner; firmly; with conviction; resolutely.(adverb)
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Use "steadfastly" in a sentence
"And yet both groups remain steadfastly committed to the Democratic party."
"Leave it to America to want a broken system to remain steadfastly in place as a National Treasure ... so as to flag future generations to our incompetence and stubbornness as a culture."
"The A's remain steadfastly in Pena's corner, though a brief trip to the minors for regrouping isn't out of the question."