Wantonly

In childhood, many violent criminals wantonly mistreated animals.

The hut was wantonly destroyed.

The book was an old one—thirty years old, soiled, scribbled wantonly over with a strange name in every variety of enmity to the letterpress, and marked at random with dates twenty years earlier than his own day.

Undoubtedly Madam—and it has always been a sentiment of mine—that to propagate a malicious Truth wantonly—is more despicable than to falsify from Revenge […]

I believe that I have no enemy on earth, and none surely would have been so wicked as to destroy me wantonly.