mirthlessly

mirthless +‎ -ly

mirthlessly (comparative more mirthlessly, superlative most mirthlessly)

1. In a mirthless manner; sadly.
   • 1913, D[avid] H[erbert] Lawrence, “chapter 7”, in Sons and Lovers, London: Duckworth & Co. […], →OCLC:

     Miriam laughed again, but mirthlessly, to hear him thus mix her up with women in a general way.

   • 1915, W[illiam] Somerset Maugham, “chapter 79”, in Of Human Bondage, New York, N.Y.: George H[enry] Doran Company, →OCLC:

     And presently he grew conscious that the gods had played a very good practical joke on him, and he laughed at himself mirthlessly.