Wiktionary
brainlessly
adv. in a brainless manner; stupidly; foolishly
Usage examples of "brainlessly".
Padget had gone to his knees, clutching at the flow of bright blood from his chest while his Wit-beast yipped brainlessly around him.
Work of that sort, now done brainlessly and eyelessly and handlessly and at the speed of light by computers, was still being done largely by hand in those days.