3 Verbs to Use for the Word relentlessness

Great as were the misery and suffering that this inscrutable man had brought into the lives of those I loved, I forgave him; and in his downfall forgot the callous relentlessness with which he had pursued his evil purpose.

In order to permit military relentlessness to proceed smoothly without any opposition, the very members of the local Parliament, the Strassburg Diet, are absolutely muzzled.

And steadily, though there was a pallor on his own face, which should have told her the terrible relentlessness of his intention, he counted: "One, two, three.

3 Verbs to Use for the Word  relentlessness