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lethargy

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Noun lethargy has 3 senses
  1. lethargy, lassitude, sluggishness - a state of comatose torpor (as found in sleeping sickness)
    --1 is a kind of torpor, torpidity
    --1 has particulars: hebetude
  2. inanition, lassitude, lethargy - weakness characterized by a lack of vitality or energy
    --2 is a kind of weakness
  3. languor, lethargy, sluggishness, phlegm - inactivity; showing an unusual lack of energy
    --3 is a kind of inactiveness, inactivity, inertia
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