Lassitude
Part of speech: noun
Definition: Lethargy or lack of energy; fatigue. Listlessness or languor.
Lethargy
Part of speech: noun
Definition: A state of fatigue, sluggishness, lassitude and inactivity.A state of apathy with lack of emotion or interest.A state of comatose torpor (as found in sleeping sickness).
Example sentence: There is no doubt that in the last years of the UPA's rule, a certain lethargy had set into the way the central government went about its business.