lassitude

lethargy, languor, lassitude, stupor, torpor mean physical or mental inertness. lethargy implies such drowsiness or aversion to activity as is induced by disease, injury, or drugs <months of lethargy followed my accident>. languor suggests inertia induced by an enervating climate or illness or love <languor induced by a tropical vacation>. lassitude stresses listlessness or indifference resulting from fatigue or poor health <a depression marked by lassitude>. stupor implies a deadening of the mind and senses by shock, narcotics, or intoxicants <lapsed into an alcoholic stupor>. torpor implies a state of suspended animation as of hibernating animals but may suggest merely extreme sluggishness <a once alert mind now in a torpor>.