Wiktionary
demandingly
adv. In a demanding way.
WordNet
demandingly
adv. in a demanding manner; "he became demandingly dominant over the years"
Usage examples of "demandingly".
How could he even think… "I'm not like my mother," she blurted, her voice stifled, and she whirled, slamming the door behind her and fleeing to her own room despite the sound of her name being called demandingly.
Encouraged, Damia continued as the Coonie swaggered back and forth, demandingly.