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Noun: lethargy  le-thu(r)-jee
  1. A state of comatose torpor (as found in sleeping sickness)
    - lassitude, sluggishness
  2. Weakness characterized by a lack of vitality or energy
    - inanition, lassitude, slackness
  3. Inactivity; showing an unusual lack of energy
    "the general appearance of lethargy alarmed his friends";
    - languor, sluggishness, phlegm, flatness

Derived forms: lethargies

Type of: inactiveness, inactivity, inertia, torpidity, torpor, weakness

Encyclopedia: Lethargy