lack of energy or vitality; sluggishness.

lack of spirit or interest; listlessness; stagnation.

physical weakness or faintness.

emotional softness or tenderness.

noun

apathy , dullness , fatigue , idleness , inaction , inactivity , laziness , listlessness , sluggishness , tiredness , torpor , weakness , hebetude , languidness , lassitude , leadenness , stupor , torpidity , blues , boredom , dreamy , ennui , exhaustion , inanition , lazy , lethargy , stagnation