Warden's face was pale, and he smiledmirthlessly at Moreton, who was standing near a desk looking over some papers.
Lawler laughed mirthlessly and got to his feet, crossing his arms over his chest and looking down at the governor.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "mirthlessly" in a variety of sentences. We hope that you will now be able to make sentences using this word.