Wiktionary
uncaringly
adv. In an uncaring manner
Usage examples of "uncaringly".
They crossed farm land, taking the horses uncaringly over fields of turnips, then dropped down on to the narrow road that ran alongside the wall of the estate.
The woman had given birth in a farm furrow one day while working in the fields, as casually as she would have defecated, and had left the newborn infant there, as uncaringly as she would have left her excrement.