listlessness

From listless +‎ -ness.

listlessness (countable and uncountable, plural listlessnesses)

1. The state of being listless; apathetic indifference; lethargy.
   • 1749, John Cleland, Fanny Hill: Memoirs of a Woman of Pleasure, Letter the First,

     But every thing must have an end. A motion made by this angelic youth, in the listlessness of going off sleep, replac'd his shirt and the bed-cloaths in a posture that shut up that treasure from longer view.

   • 1815, Jane Austen, Emma, volume II, chapter 12:

     This sensation of listlessness, weariness, stupidity, this disinclination to sit down and employ myself, this feeling of every thing’s being dull and insipid about the house!— I must be in love; I should be the oddest creature in the world if I were not—for a few weeks at least.

   • 1851, Herman Melville, Moby-Dick, Chapter 35,

     […] lulled into such an opium-like listlessness of vacant, unconscious reverie is this absent-minded youth by the blending cadence of waves with thoughts, that at last he loses his identity; takes the mystic ocean at his feet for the visible image of that deep, blue, bottomless soul, pervading mankind and nature; and every strange, half-seen, gliding, beautiful thing that eludes him; every dimly-discovered, uprising fin of some undiscernible form, seems to him the embodiment of those elusive thoughts that only people the soul by continually flitting through it.