listlessness       
noun [ U ] uk/ˈlɪst.ləs.nəs/ us/ˈlɪst.ləs.nəs/
 懈怠,懒散,无精打采
the feeling of having no energy and enthusiasm and being unwilling to do anything needing effort
  A lack of iron in the body can lead to listlessness and a lack of concentration. 体内缺铁会导致无精打采和注意力不集中。 
 The children displayed the tell-tale listlessness of malnutrition. 孩子们表现出因营养不良而无精打采的样子。 
 See: listless
 - More examples
 - There was a listlessness in the way he walked, as if he saw no reason for taking one step further.
 - Symptoms of kidney failure include vomiting, listlessness and lack of interest in food.
 - He will smoke his cigar and drink himself into listlessness.