enervation
noun
[ ɛnəˈveɪʃ(ə)n ]
• a feeling of being drained of energy or vitality; fatigue.
• "a sense of enervation"
Similar:
fatigue,
exhaustion,
tiredness,
overtiredness,
weariness,
lassitude,
lack of energy,
lack of vitality,
devitalization,
weakness,
feebleness,
impotence,
enfeebled state,
debilitation,
incapacitation,
indisposition,
prostration,
immobility,
weediness,
asthenia,