harshly

So the Wicked Witch laughed to herself, and thought, “I can still make her my slave, for she does not know how to use her power.” Then she said to Dorothy, harshly and severely:

Almost as quickly as it came the head went back to the body, and the man laughed harshly as he said, “It isn’t as easy as you think!”

An instant later steps crept down the passage—steps which were meant to be silent, but which reverberated harshly through the empty house.

If I were not afraid of judging harshly, I should be almost tempted to say, that there is a strong appearance of duplicity in all this.