Wiktionary
unforgivingly
adv. In a way that is unforgiving
WordNet
unforgivingly
adv. without forgiveness; in an unforgiving manner; "unforgivingly, he insisted that she pay her debt to the last penny" [ant: forgivingly]
Usage examples of "unforgivingly".
Time, and perform an hundred other tasks, most of them unforgivingly in need of Accuracy.
The wall was unforgivingly hard, almost triumphant in its bruising resistance, and it was curved.
She had known he would be angry with her, but she hadn’t guessed he would be so unforgivingly, corrosively furious.