listlessness

noun

1. (countable, uncountable)The state of being listless; apathetic indifference; lethargy.

   “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.”

   “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.”